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3 years ago

8

PLEASE HELP!! 15 POINTS! What could the fourth quantum number of a 2s^2 electron be?

1 answer:

Veronika [31]3 years ago

7 0

Answer:

option D

Explanation:

first quantum number of a 2s2

n = 2

second quantum number of a 2s2

l = 0 to n-1

l = 0, 1

For s orbital

l = 0

third quantum number of a 2s2

ml = - l to +l

ml = 0

fourth quantum number of a 2s2 electron be

?½ = spin down

½ = spin up

2s2 has 2 electrons 1 spin down and 1 spin up (starts with spin down)

ms = +1/2

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<u>Explanation:</u>

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