The 'Spin only’ Magnetic moment for [ Ni ( NH 3 ) 6 ] 2 + is______ × 10 – 1 BM. (given = Atomic number of Ni : 28 ) Round off your answer to the nearest integer.

Step-by-step solution

In the presence of ligand NH 3 , pairing does not occur in Ni 2 + because pairing of electrons cannot create two vacant d-orbitals. Hence, nickel ion undergoes sp 3 d 2 hybridisation and it has two unpaired electrons. Ni 2 + = 3 d 8 No. of unpaired electron = 2 The spin only magnetic moment μ = n n + 2 = 8 = 2 . 82 BM = 28 . 2 × 10 - 1 BM x = 28