Question

What is the quantum number set of the ground-state electron that is found in lithium (Li) but not in helium (He)?

(1, 0, 0, +½)
(1, 0, 1, +½)
(2, 0, 0, +½)
(2, 0, 1, +½)

Answer 1

@Abhisar how do you do this?

Answer 2

2\(s^1\) electron

Answer 3

Can u find the quantum number this ?

Answer 4

um it don't know how

Answer 5

It's simpler
2 will be principle quantum number, 0 will be Azimuthal quantumn number (l), 0 will be magnetic quantum number (\(\huge m_l\)), =+1/2 will be spin quantum number (\(\huge m_s\))

Answer 6

Got it ?

Answer 7

can you tell me how to set it up?

Answer 8

u know to find out 4 quantum numbers ?

Answer 9

yes 0 to (n-1)

Answer 10

that is the formula for finding l (one of the 4 quantum numbers)

Answer 11

o

Answer 12

I told u to read ur textbook. U read that ?

Answer 13

i don't have a textbook I am doing online studying

Answer 14

then u must be having an e-book

Answer 15

I don't

Answer 16

Then how do u study ?

Answer 17

i read lessons but they don't make any sense to me:(

Answer 18

read this
https://in.answers.yahoo.com/question/index?qid=20080712213516AA3SiwM

Answer 19

ok it makes more sense

Answer 20

l = 0 to n-1. Hence, it can have values 0, 1, 2.

m = -l to +l. Hence, it can have values -2, -1, 0, 1, 2

s = +1/2 and -1/2

i don't understand this part

Answer 21

@Abhisar

Answer 22

all three ?

Answer 23

yes :l

Answer 24

What is giving u trouble ?

Answer 25

wait so if you solve the problem is your answer the third option?

Answer 26

@radar

Answer 27

yes it is the third one

Answer 28

:)