Describe the pattern of the Lewis dot structures of the first 18 elements (include periods and groups/families)?

Answers

Answer 1

Answer:

The Lewis dot structures of elements in the same group are the same (except that the name of the element is shown in the structure) while for elements in the same period it increases by one from left to right.

Explanation:

Lewis dot structures are the structures which represent the valence electrons of an atom. The dots in the structure represent electrons in the valence shell of the atom.

Elements in the periodic table are arranged into groups and periods. The groups are the vertical columns whereas the periods are the horizontal rows. The first 18 elements of the periodic table are Hydrogen(H), Helium (He), Lithium (Li), Beryllium (Be), Boron (B), Carbon (C), Nitrogen (N), Oxygen (O), Fluorine (F), Neon(Ne), Sodium (Na), Magnesium (Mg), Aluminum (Al), Silicon (Si), Phosphorous (P), Sulfur (S), Chlorine (Cl) and Argon (Ar). They are found within Groups IA to VIIIA, as well as from period 1 to 3 in the periodic table. elements in group IA have one valence electron; elements in group IIA has two, IIIA has three, IVA has four, VA has five, VIIA has six, VIIA has seven, while VIIIA has eight valence electrons.

Elements in the same group have the same number of valence electrons while the valence electrons of elements in the same period increase by one from left to right. Therefore, the Lewis dot structures of elements in the same group are the same (except that the name of the element is shown in the structure) while for elements in the same period it increases by one from left to right.

The Lewis dot structure of the first 18 elements is shown in the attachment below.

Describe The Pattern Of The Lewis Dot Structures Of The First 18 Elements (include Periods And Groups/families)?

Related Questions

How many neutrons are in potassium-50?

Answers

Explanation:

e 20 neutrones

Answer:

31 neutrons

Explanation:

Potassium has 19 protons (you can tell by the atomic number)

Potassium-50 is an isotope, meaning that there are a different amount of neutrons than normal.

Protons never change so subtract 50 from 19 to get the number of neutrons.

Number the steps in the correct order to show how ice changes into gas. __ The molecules gain enough kinetic energy to leave their solid form. __ The water becomes liquid and gets hotter. __ Ice is heated and the molecules speed up __ The molecules leave their liquid form and enter the air as a gas. __ Ice molecules vibrate in a fixed place.

Answers

Answer: Please find answer in explanation column

Explanation:

Numbering the steps in the correct order to show how ice changes into gas, we have that

1.Ice molecules vibrate in a fixed place.

2. Ice is heated and the molecules speed up

3. The molecules gain enough kinetic energy to leave their solid form.

4.The water becomes liquid and gets hotter.

5. The molecules leave their liquid form and enter the air as a gas.

Ice is the solid form of water which cannot freely move around in this form so it vibrates about its fixed position.When heated,its molecules acquire energy and its vibration speeds up causing it to overcome its binding forces (that makes it vibrate about a fixed position) and becomes mobile as it leaves its solid form to acquire a liquid state. With continuous heating, the liquid gets hotter making the molecules vibrate more rapidly, spread out and move freely at high speeds to form Water vapour - The gaseous state of water.

1. Which of the following
equalities is false?
A. 1 kilogram = 100 meters
B. 50 milliliters = 5 centiliters
C. 3 grams = 0.003 milligrams
D. 70 hectometers = 7,000 decimeters

Answers

The correct answer is C

The false
one is C.

How can you increase reaction rate in the forward direction? Chose all that
apply

Answers

Answer:

Sorry my task time about to run out : (

Explanation:

how will growing trees affect the levels of carbon dioxide in the atmosphere

Answers

Answer:

As trees grow, they help stop climate change by removing carbon dioxide from the air, storing carbon in the trees and soil, and releasing oxygen into the atmosphere. Trees provide many benefits to us, every day.

trees decrease carbon dioxide levels as they absorb it for photosynthesis

How is temperature related to the physical change of a
substance?

Answers

Answer:

Temperature is a measure of the kinetic energy of particles in a substance. As temperature increases, the atoms or molecules in a substance gain energy.

Explanation:

why can the charge of the nucleus never be +8

Answers

Answer:

it could destroy the nucleus

Explanation:

due too much power going into it

balance the equations

Answers

Answer: a) [tex]H_3PO_4+3NaOH\rightarrow Na_3PO_4+3H_2O[/tex]

b) [tex]PCl_3+3H_2O\rightarrow P(OH)_3+3HCl[/tex]

c) [tex]2Al+3H_2SO_4\rightarrow Al_2(SO_4)_3+3H_2[/tex]

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side.

The balanced chemical equations are :

[tex]H_3PO_4+3NaOH\rightarrow Na_3PO_4+3H_2O[/tex]

[tex]PCl_3+3H_2O\rightarrow P(OH)_3+3HCl[/tex]

[tex]2Al+3H_2SO_4\rightarrow Al_2(SO_4)_3+3H_2[/tex]

Thank chu if you answer

Answers

Answer: H

Explanation:

What human actions contributed to the nutrient pollution of Lake Okeechobee?
PLZ HELP MEEEEEEEEEEEEEEEE I BEG YOU

Answers

Answer:

These trends were attributed to both the increased external loads and to a reduction in the lake sediment's ability to assimilate nutrients from the water column. The main sources of external nutrient inputs are animal waste and fertilizers applied to food and forage crops.

How many atoms are in 100g H2O ?

Answers

Answer:11

explain

: cause i think it is

CuCl2 + NaNO3 -------> Cu(NO3)2 + NaCl

Answers

Answer:

what

Explanation:

help, with both number 6 and 7, be sure of your answer please, first one to aanswer gets brainliest!

Answers

Answer:

6. Mutalism

7. Commensalism

Explanation:

6- Both species benefit = (mutualism).

7- Commensalism is an association between two organisms in which one benefits and the other derives neither benefit nor harm.

Answer:

6: C. Parasitism

7: B. Commensalism

Explanation:

6: Here the flea gets its nutrients from the mouse's blood and the flea benifits from the expense of the mouse.

7: Commensalism is a type of relationship between two living organisms in which one organism benefits from the other without harming it

Fill in the blank with the term that best completes each sentence. During the life cycle of a seedless plant, a sporophyte releases . When spores land, they grow into gametophytes. One gametophyte produces sperm cells that fertilize the cells of another gametophyte, forming a . This then grows into a sporophyte.

Answers

Answer:

spores

egg

zygote

Explanation:

i think this is right

Answer:

1) spores

2) egg

3) zygote

Explanation:

hope this helps :)

What is the total number of moles in 275 grams of Li2SO4?

Answers

Answer:

2.5 mol

Explanation:

During an experiment, four different elements were added to water and observed. Element C showed no reaction. The other three elements bubbled, with Element D bubbling with the greatest vigor and Element A bubbling the least. Which list orders the elements from least reactive with water to most reactive with water?

Answers

Answer:

In order most reactive to least reactive:

Explanation:

The reactivity series is depend on the element that reacts with the oxygen. The metal which replaces the other metal is a more reactive metal.

In the question, there are different metals and we have to find the reactivity series of the unknown metal

The series in decreasing order is as:- D > B > A > C.

In this reaction, the upper element replaces the lower elements because it is highly reactive.

Hence, the correct sequence is D > B > A > C.

For more information, refer to the link:-

https://brainly.com/question/15804584

In a paragraph please explain how the reactivity of potassium has increased its
value. Be sure to discuss one chemical or product that is made from potassium,
it's benefit to humans and how it is made.

Answers

Answer:

Potassium is a very high reactive metal. Exposed to water, it explodes with a purple flame. Potassium is involved in the health of cells and of blood vessels, so its reactivity has increased values, being used by scientists for blood pressure as well as lethal injection, enough could cause your heart to stop. Take bananas for example, they contain potassium, enough for humans.

Explanation:

Is painting the walls of a dollhouse red a chemical change or non chemical change?

Please help.

Answers

Answer:

it should be chemical

Explanation:

An element with atomic number 18 is a noble gas.Into which family you shall place elements with atomic number 17 and 19 and why?

Answers

Answer:

Explanation:

An element with atomic number 18 is a noble gas.

The element with atomic number 19 will have one extra electron so it can donate one electron or shed one electron to attain noble gas configuration .

It tends to shed one electron to become positively charged ion . Hence they are electro-positive elements .

Similarly the element with atomic number 17 will have one short electron so it can gain one electron to attain noble gas configuration .

They tend to gain one electron to become negatively charged ion . Hence they are electro-negative elements . They have high electronegativity .

define a shadow plz help

Answers

Answer:

A shadow is that thing that follows you everywhere when the sun is out. It's creepy!

Explanation: Hope I helped!

Answer:

A shadow is a dark form that you cannot touch, hear, feel, or taste. It's simply formed when an object blocks a source of light.

Plsss help me I don’t know what to write plssss help

Answers

Answer:

To summarise, a parent cell divides by mitosis (doubling the DNA then splitting) and then divides again to have 4 daughter cells with all different DNA in and all with only half the amount of DNA as a normal body cell. This stage is meiosis. They make sperams and eggs which fuse together in fertilisation and once fertilised the cell will divide by mitosis to create embryos and further to grow into a fetus.

What is an energy human eyes can detect?
A. light
B. mechanical
C. chemical
D. nuclear

Answers

I think light but I could be wrong

Answer:

A. light

Explanation:

I know because with longer wavelengths than visible light, has been "invisible" to the human eye.

Why is oil so incredibly valuable as an energy source? What is exceptional about its energy density?

Answers

Answer:

Easy portability,easy convertability, high calorific value for its unit mass.

Explanation:

Oil is so incredibly valuable as an energy source as it has easy portability, easy convertibility, high calorific value for its unit mass.

What is oil?

Any chemical compound that is nonpolar, predominantly hydrocarbon-based, hydrophobic, and lipophilic is considered to be an oil. Typically combustible and surface active, oils. Most oils are lipids which become liquid above room temperature and are unsaturated. Classes of chemical substances that may be unconnected in structure, characteristics, and usage are included in the general concept of oil.

They are employed in the production of numerous varieties of paints, plastic bottles, and various other products, as well as for usage as food (such as olive oil), fuel (such as heating oil), lubricant (such as motor oil), and medical uses. Some religious rituals and ceremonies employ specially formulated oils as cleansing elements. Oil is so incredibly valuable as an energy source as it has easy portability, easy convertibility, high calorific value for its unit mass.

Therefore, oil is so incredibly valuable as an energy source as it has easy portability, easy convertibility, high calorific value for its unit mass.

To know more about oil, here:

https://brainly.com/question/14625819

#SPJ2

I Need help ASAP plz

Answers

Answer:

1 Valence Electron

2 Proton

3 Neutron

4 Nucleus

Explanation:

im smart

A cold can of soda is taken out of the refrigerator. It slowly warms up until it is at room temperature. Once the soda has warms up, it has more thermal energy than it had in the refrigerator. Where did this additional thermal energy come from?

Answers

Answer:

See explanation

Explanation:

We know that the thermal energy of a substance largely depends on the temperature of the body. This implies that the hotter a substance is, the greater its thermal energy and vice versa.

When you bring a cold can of soda out of the refrigerator, the molecules of air at room temperature gradually loose energy to the can and condense around it. This transfers thermal energy from the air particles to the molecules in the cold can of soda and the soda warms up pretty soon!

Help ASAP I will mark brainliest to the correct answer!!!!✨✨✨

Answers

Answer:

1180.3 km

Explanation:

Not sure, but I think you would divide it.

3541 km ÷ 3 hrs = 1180.3 km

Hope this helps, thank you !!

What the difference between the tundra and the coniferous forest

Answers

Answer:

Differences in Plant Life

The taiga has a thick forest of conifers such as pine and spruce, while in the tundra trees are absent completely. This is due in part to the lack of water available in the tundra, but also is a result of permafrost.

Explanation:

what is 208.813 reduced to two significant figures?

Answers

Answer:

208.81

Explanation:

i think this is the answer hope this helps

It was determined that Plan B would likely limit habitat disruption better than Plan A. State officials, however, decided to go with Plan A. Why did the state officials probably choose Plan A?

Answers

Answer: The economic demands of Plan B were too high.

Explanation: During the selection of any action plan to maintain biodiversity, several factors must be considered. These factors include the cost of the plan, the estimated effectiveness of the plan at protecting the targeted populations, and how the plan will affect both humans and other populations in the area.

The chart shows that the approximate cost of implementing Plan A was $5 billion. The approximate cost of implementing Plan B was $30 billion. While Plan B might have been more effective at reducing habitat destruction, and thus maintaining biodiversity, state officials likely chose Plan A over Plan B because the economic demands of Plan B were too high.

Answer: The economic demands of Plan B were too high.

Explanation:

just did it

name the stages of the water cycle

Answers

Answer:

They are evaporation, condensation, precipitation and collection

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On how many days did it rain.Answers3101527 Market researchers selected a random sample of people from region A and a random sample of people from region B. The researchers asked the people in the samples whether they had tried a new product. The difference between the sample proportions (B minus A) of people in the regions who indicated they had tried the new product was 0.15. Under the assumption that all conditions for inference were met, a hypothesis test was conducted with the alternative hypothesis being that the population proportion of B is greater than that of A. The p-value of the test was 0.34.Which of the following is the correct interpretation of the p -value?a. If the difference in proportions of people who have tried the new product between the two populations is actually 0.15, the probability of observing that difference is 0.34.b. If the difference in proportions of people who have tried the new product between the two populations is actually 0.34, the probability of observing that difference is 0.15.c. If the proportions of all people who have tried the new product is the same for both regions, the probability of observing a difference of at least 0.15 is 0.34.d. If the proportions of all people who have tried the new product is the same for both regions, the probability of observing a difference of at most 0.15 is 0.34.e. If the proportions of all people who have tried the new product is the same for both regions, the probability of observing a difference equal to 0.15 is 0.34. Can someone plz help me out!!!