Which one of the following ions has electronic configuration [ A r ] 3 d 6 ? (At. nos. Mn = 25, Fe = 26, Co = 27, Ni = 28)

Question

Which one of the following ions has electronic configuration [ A r ] 3 d 6 ? (At. nos. Mn = 25, Fe = 26, Co = 27, Ni = 28), C o 3 +, N i 3 +, M n 3 +, F e 3 +

MARKS App · Accepted Answer

In case of C o + 3 [ A r ] 3 d 6 configuration is possible 27 C o → [ A r ] 3 d 7 4 s 2 On removing 3 e - we get C o 3 + → [ A r ] 3 d 6

Search any question & find its solution

Looking for more such questions to practice?