Consider the ground state of Z=24. The numbers of electrons with the azimuthal quantum number, l = 1 and 2 are, respectively

Cr 24 →1s2,2s2,2p1=16,3s2,3p61=1,3d51=2,4s1(We know that for p the value of l = 1 and for d, l = 2) For l = 1 total number of electron = 12 For l = 2 total number of electron = 5.Hence, the correct answer is (2).