The number of unpaired electrons in gaseous species of Mn³, Cr³, Mn³, Cr³, and V³ are:
a) 3, 3, 3, 3, 3
b) 4, 4, 4, 4, 4
c) 1, 1, 1, 1, 1
d) 2, 2, 2, 2, 2