How many electrons in a fully filled `f`-subshell have `m=0`?

How many electron on a fully filled f sub-shell have m_(1) = 0 ?

How many electron on a fully filled l sub-shell have m_(1) = 0 ?

How many electrons will be present in the subshells having m_s value of -1//2 for n = 4?

How many electrons will be present in the subshells having m _(s) value of - 1//2 for n = 4 ?

How many electrons in Argon have m = 0 ?

(1) How many subshells are associated with n=4? (2) How many electrons will be present in the subshells having m_(s) value of -(1)/(2) for n=4?

How many electrons in calcium have l = 0 ?

How many electrons in calcium have l = 0 ?

How many electrons in p-subshell of argon (Z = 18) have same spin ?