Question

who many sub shell are associated with n=4 ? who many electron are present in the sub shell having s=-1/2 for n=4​

Answer 1

(a) n = 4 (Given)

For a given value of ‘n’, ‘l’ can have values from zero to (n – 1).

∴ l = 0, 1, 2, 3

Thus, four sub-shells are associated with n = 4, which are s, p, d and f.

(b) Number of orbitals in the nth shell = n2

For n = 4

Number of orbitals = 16

Each orbital has one electron with ms = -1/2

Hence there will be 16 electrons with ms = -1/2