A Het ion corresponds to the principle quan- tum number n = 6. How many states are there? The last (most energetic) electron in sodium is in a 3s state. What do you expect the order of the ener- gies to be for the last electrons in the three possible states 3s, 3p, and 3d? 1. 3d > 3s > 3p 2. 3p > 3s > 3d 3. 3s = 3p = 3d 4. 3d > 3p > 3s 5. 3s > 3p > 3d Consider the ground state of the silicon atom (Z = 14). What is the electronic configuration for this state? 1. 1s 2s3 3p2 3s³ 3p3 2. 1s2 2s2 2p® 3s 3p 3. 1s 2s2 2p 3s' 3p3 4. 1s? 2s? 2p° 3s2 3p2

Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter5: Quantum Mechanics And Atomic Structure
Section: Chapter Questions
Problem 25P: Suppose that the spin quantum number did not exist, and therefore only one electron could occupy...
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A Het ion corresponds to the principle quan-
tum numbern=6.
How many states are there?
The last (most energetic) electron in sodium
is in a 3s state.
What do you expect the order of the ener-
gies to be for the last electrons in the three
possible states 3s, 3p, and 3d?
1. 3d > 3s > 3p
2. 3p > 3s > 3d
3. 3s = 3p = 3d
4. 3d > 3p > 3s
5. 3s > 3p > 3d
%3D
Consider the ground state of the silicon atom
(Z = 14).
What is the electronic configuration for this
state?
1. 1s 2s 3p2 3s 3p
2. 1s? 2s2 2pº 3s
3p
3. 1s? 2s? 2p° 3s 3p
4. 1s? 2s? 2p® 3s² 3p?
Transcribed Image Text:A Het ion corresponds to the principle quan- tum numbern=6. How many states are there? The last (most energetic) electron in sodium is in a 3s state. What do you expect the order of the ener- gies to be for the last electrons in the three possible states 3s, 3p, and 3d? 1. 3d > 3s > 3p 2. 3p > 3s > 3d 3. 3s = 3p = 3d 4. 3d > 3p > 3s 5. 3s > 3p > 3d %3D Consider the ground state of the silicon atom (Z = 14). What is the electronic configuration for this state? 1. 1s 2s 3p2 3s 3p 2. 1s? 2s2 2pº 3s 3p 3. 1s? 2s? 2p° 3s 3p 4. 1s? 2s? 2p® 3s² 3p?
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