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Materials and Components - Engineering

Q1:

The magnetic moment in units of Bohr magneton of a ferrous ion in any ferrite is

A zero

B 2

C 4

D 6

ANS:C - 4

The electronic configuration of ferrous ion is;

Fe2+ :1s2, 2s2, 2p6, 3s2, 3p6, 3d6.
The no.of electrons in outermost orbit is 6.
No.of unpaired electrons = 4.
Magnetic moment = 4 B.M.