Question

Lithium anamolous property is due to absence of d orbital?

Answer 1

YEAH, IT IS ONE OF THE REASONS. BUT BE CAREFUL, IT IS NOT THE ONLY REASON.

Li shows anomalous properties bcoz of a phenomenon called as diagonal relationship.

In the periodic table,

                          H                              

                          Li     Be                                           B   C   N .....

                          Na   Mg                                          ................  

                          K      Ca                                          .................

Here Li has similar properties as that of Mg..

Also, this diagonal relationship not only arises for Li but also for all the elements of the period-2. Moreover, this dgn relationship arises due to the large charge/radius ratio, high electronegativity , and yeah, absence of d-orbital also.

HOPE U UNDERSTOOD !!