Question

 

In a borax bead test under hot condition, a metal salt (one from the given) is heated at point B of the flame, resulted in green colour salt bead. The spin-only magnetic moment value of the salt is ………. BM (Nearest integer)

[Given atomic number of Cu = 29, Ni = 28, Mn = 25, Fe = 26]

Answer 1

Correct answer is : 6

\(Fe ^{+3}\) will give green coloured bead when heated at point B.

Number of unpaired \(e^-\) in \(Fe ^{+3} = 5\)

\(\mu = 5.92\)

Nearest integer = 6