Question

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

(1, 0, 0, -½)
(1, 0, 1, -½)
(1, 1, 0, -½)
(1, 1, 1, -½)

Answer 1

@Abhisar could you help me please?

Answer 2

there is two electron in he ok
so its electronic configuration will be -1s^2
this corresponds to
\[[n,l,m_x,m_s]=[1,0,0,(-,+)1/2]\]
so option A seems correct

Answer 3

thanks but i am kinda confused what is the first step to do this problem?

Answer 4

for this kinda problems always try to find out the electronic configuration first then the quantum states one by one

Answer 5

ohh

Answer 6

:)

Answer 7

thanks!

Answer 8

np bud :)