Given below are two statements :
Statement I : Ferromagnetism is considered as an extreme form of p

Question

Given below are two statements : 
Statement I : Ferromagnetism is considered as an extreme form of paramagnetism.
Statement II : The number of unpaired electrons in a $\mathrm{Cr}^{2+}$ ion $(Z=24)$ is the same as that of a $\mathrm{Nd}^{3+}$ ion $(Z=60)$.
 In the light of the above statements, choose the correct answer from the options given below:

Professor PC Thomas Classes · Answer

(a) : Ferromagnetism is an extreme form of paramagnetism hence, statement-I is true.
Electronic configuration of $\mathrm{Cr}^{2+}:[\mathrm{Ar}] 3 d^4$ thus, number of unpaired electrons is 4. Electronic configuration of $\mathrm{Nd}^{3+}:[\mathrm{Xe}] 4 f^3$ thus, number of unpaired electrons is 3 . Hence, statement-II is false.