Angular quantum number?

Question

In the electron configuration 1s2,2s2,2p5, how does the the sum of the angualr quantum number add up to 5?

Answer 1

An atomic electron quantum moment L which is related to its quantum numer l is described by the equatuin

L^2 psi = h^2 l (l+1) psi

for this electron configuration

1 s has l =1

2 s has l = 2

2 p has l = 2

adding these numbers you get 5

Answer 2

Chem guy is physically powerful proper to the very fact the s is the quantum quantity that determines spin, yet he's incorrect while he says the electrons themselves are spinning, they do no longer look to be spinning. It purely has a magnetic container as though its spinning. Electron spin is largely a recognition for the intrinsic angular momentum of the electron. Electrons like many subatomic debris have spin, its purely a thank you to describe the magnetic container that the particle reflects. s=+a million/2 l s= -a million/2

Answer 3

s has 0

p has 0 and 1

Now add them up.