What are the number of sub-levels and electrons for the first four principal quantum numbers?
1 Answer
For quantum number 1, the number of sub level is 1, number of electrons= 2.
For quantum number 2, no. of sub levels are 2, no. of electrons= 8. For quantum no. 3, sub levels are 3 and no. of electrons are 18.
For 4th quantum no. sub levels are 4 and electrons are 32.
Explanation:
You can easily calculate it with this method :
-
Suppose the principal quantum number is symbolized as
n the Azimuthal or secondary quantum number is symbolized asl
the magnetic Q.N ism
and the spin Q.N iss . -
n = which energy shell it is;l = number of sub-shells;m = number of orbitals as well as electrons.
l =0,n-1 andm =+- l =-l, 0, +l . -
For example, in case of principal quantum number 2,
the result ofl is =n-1 = 2-1 = 1, which means the number of subshells are two : 0 and 1.
Now the result for
So the total number of electrons for principal quantum number 2 is 8 .