How many electrons are gained by `IO_3^(-)` ion to convert into `I^(-) ion ?
5
6
7
4

How many 'd' electrons are present in Cr^(2+) ion?

How many electrons in the Cl^(-) ion have value of m=0?

How many unpaired electrons ae in a Fe^(2+) ion in the ground state?

.In how many of the following d-block mono cations (\(M^{+}\)),the second electron is removed from d-orbital of \(M^{+}\) ion to convert into \(M^{2+}\)ion \(Ti^{+},V^{+},Cr^{+},Mn^{+},Fe^{+},Co^{+},Zn^{+},Cu^{+},Pd^{+},Ag^{+},Ni^{+}\)