Help on Some Chemistry Questions Please
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Help on Some Chemistry Questions Please

[From: ] [author: ] [Date: 12-07-05] [Hit: ]
What element’s valence electrons are located in 5s25p5?Sm-3) 4.4) [He]2s2 2p3. The way you do this is you find the noble gas that is in the above row of the element whose Noble gas notation you are trying to find. Write the noble gas that is in the above row in bracketsand then count over as you would normally.5) 18.......
Please help I'm really struggling, thanks so much :)

Question 3 (Multiple Choice Worth 2 points)

What is the number of the lowest energy level that contains an f sublevel?

3

4

5

6

Question 4 (Multiple Choice Worth 2 points)

What is the Noble gas notation for nitrogen (N)?

[He]2s22p3

[Ne] 3s23p3

[Mg] 2p3

[He] 3s23p3

Question 5 (Multiple Choice Worth 2 points)

How many electrons can be held in the entire third energy level?

8

9

18

32

Question 6 (Multiple Choice Worth 2 points)

Which of the following elements has seven valence electrons?

N

Cl

Fr

Ar

Question 7 (Multiple Choice Worth 2 points)

What element has one electron in its 4f sublevel?

Ce

Th

Sc

Y

Question 8 (Multiple Choice Worth 2 points)

Which of the following is a reasonable ground-state electron configuration?

1s22s22p43s2

1s21p62s22p6

1s22s22p63s23p64s24d10

1s22s22p63s23p64s23d5

Question 9 (Multiple Choice Worth 2 points)

Which of the following is a possible ground-state electron configuration?

[Xe] 6s24f145d106p2

[Kr] 5s24d85p3

[Xe] 6s25d106p4

[Kr] 5s25d105p5

Question 10 (Multiple Choice Worth 2 points)

Which of the following is a possible Noble gas notation?

[Xe] 6s26p6

[Kr] 5s25d85p6

[Xe] 6s25d106p4

[Kr] 5s24d105p3

Question 11 (Multiple Choice Worth 2 points)

What element’s valence electrons are located in 5s25p5?

Tc

I

Sb

Sm

-
3) 4.

4) [He]2s2 2p3. The way you do this is you find the noble gas that is in the above row of the element whose Noble gas notation you are trying to find. Write the noble gas that is in the above row in brackets and then count over as you would normally.

5) 18. the s contains 2, the p contains 6, and the d contains 10, so add them up and you get 18.

6) Cl. the valence electrons of an element is the exact same as the number column that it is in. (when you don't count the transition metals)

7) I have no clue, sorry

8) 1s2 2s2 2p6 3s2 3p6 4s2 3d5. They are all arranged in the correct order

9) [Kr]...

10) [Xe]6s2 5d10 6p4.

11) Tc
1
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