The number of electrons in Cr having ‘m’ value zero, is _______. (Atomic number : Cr = 24)

Electronic configuration of  $Cr = 1s^2 2s^2 2p^6, 3s^{2}3p^6 3d^{5}4s^1$
No. of electrons with m-value zero = 2 + 2 + 2 + 2 + 2 + 1 + 1 = 12