How many electrons will be present in subshells having spin quantum number value of -1/2 for n=4?
it's 32.
use 2n^2 to figure the number of electrons for each shell.
To explain why 2n^2 works, we gotta understand the quantum numbers.
s subshell (l=0) has 2 electrons (starts at n=1)
p subshell (l=1) has 6 electrons (starts at n=2)
d subshell (l=2) has 10 electrons (starts at n=3)
f subshell (l=3) has 14 electrons (starts at n=4)
Since it's n=4, then possible values for l are 0,1,2,3
2+6+10+14 = 32
Half of them would be with sipn 1/2 and half with spin -1/2
So no. of e with spin quantum no. = -1/2 would be 32/2 = 16
use 2n^2 to figure the number of electrons for each shell.
To explain why 2n^2 works, we gotta understand the quantum numbers.
s subshell (l=0) has 2 electrons (starts at n=1)
p subshell (l=1) has 6 electrons (starts at n=2)
d subshell (l=2) has 10 electrons (starts at n=3)
f subshell (l=3) has 14 electrons (starts at n=4)
Since it's n=4, then possible values for l are 0,1,2,3
2+6+10+14 = 32
Half of them would be with sipn 1/2 and half with spin -1/2
So no. of e with spin quantum no. = -1/2 would be 32/2 = 16