1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
hram777 [196]
3 years ago
8

How do you determine the valence electrons? Ex. Li=?, Be=?, N=?, O=?, F=? (List the charges)

Chemistry
2 answers:
MatroZZZ [7]3 years ago
6 0
By finding what group each is in
JulsSmile [24]3 years ago
4 0
<span>Find a periodic table of elements. ... <span>Label each column on the periodic table of elements from 1 to 18. ... </span><span>Find your element on the table. ... </span>Use the group numbers to determine the number of valence electrons. </span><span>imgres</span>
You might be interested in
An atom holds 7 electrons. use orbital notation to model the probable location of its electrons.
zheka24 [161]

Answers:

(a) 1s² 2s²2p³; (b) 1s² 2s²2p⁶ 3s²3p⁶ 4s²3d²; (c) 1s² 2s²2p⁶ 3s²3p⁵

Step-by-step explanation:

One way to solve this problem is to add electrons to the orbitals one-by-one until you have added the required amount.

Fill the subshells in the order listed in the diagram below. Remember that an s subshell can hold two electrons, while a p subshell can hold six, and a d subshell can hold  ten.

(a) <em>Seven electrons </em>

1s² 2s²2p³

There are two electrons in the 2s subshell and three in the 2p subshell. The remaining two electrons are in the inner 1s subshell.

(b) <em>22 electrons </em>

1s² 2s²2p⁶ 3s²3p⁶ 4s²3d²

There are two electrons in the 4s subshell and two in the 2p subshell. The remaining 18 electrons are in the inner subshells.

(c) <em>17 electrons</em>

1s² 2s²2p⁶ 3s²3p⁵

There are two electrons in the 3s subshell and five in the 2p subshell. The remaining 10 electrons are in the inner subshells.

7 0
3 years ago
What is the value of δg°' (or, to put it another way, the cost) when 2nadp+ and 2h2o are converted to 2nadph plus 2h+ plus o2?
svp [43]
The answer is 104.9, i dont know how though
4 0
3 years ago
Read 2 more answers
1. Long strands of DNA that contain lots of genes
sergeinik [125]

Answer: chromosome

Explanation: :)

4 0
3 years ago
Read 2 more answers
What are 3 sentences about the history of Egypt? Thank you for taking aside time to answer this. Please answer this as quickly a
Nataly_w [17]
1) The history of egypt is still unclear; artifacts, how the pyramids were built, gods and whatnot.
2) Egypt's history being uncovered in regards to curses and amulets is still being practiced in the country and some others because of the great influence it had.
3) Egyptians being able to construct such grand structures that still stand (pyramids) serves as evidence that proves Egypt was a very advanced civilization at the peak of their advancement.
5 0
3 years ago
Benzoic acid, c6h5cooh, has a ka = 6.4 x 10-5. what is the concentration of h3o+ in a 0.5 m solution of benzoic acid? 3.2 x 10-5
FinnZ [79.3K]
The answer for this issue is: 
The chemical equation is: HBz + H2O <- - > H3O+ + Bz- 
Ka = 6.4X10^-5 = [H3O+][Bz-]/[HBz] 
Let x = [H3O+] = [Bz-], and [HBz] = 0.5 - x. 
Accept that x is little contrasted with 0.5 M. At that point, 
Ka = 6.4X10^-5 = x^2/0.5 
x = [H3O+] = 5.6X10^-3 M 
pH = 2.25
(x is without a doubt little contrasted with 0.5, so the presumption above was OK to make) 
3 0
3 years ago
Other questions:
  • What do repeated trials in an experiment allow a scientist to do?
    11·1 answer
  • 11 swimming pool water can be kept free of harmful bacteria by adding aqueous sodium chlorate(i),naocl. this reacts with water t
    15·1 answer
  • Aaleyah learned that astronomers use different properties, such as their
    6·1 answer
  • Give a theoretical reason why lithium and oxygen combine in the ratio 2:1
    9·1 answer
  • What is the molarity of a 2.0 L sodium hydroxide solution containing 10.0 grams of solute?
    8·1 answer
  • Which one should I go in ??????
    8·1 answer
  • How many moles are in 4.3 x 1024 molecules of H20?
    9·1 answer
  • In your opinion, why do you think the atomic models are not final?
    15·1 answer
  • This is simple, I just want to check my answer for this
    15·2 answers
  • You are given a model of various phases of the moon, as shown below. You can tell right away that it is inaccurate.
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!