Why are transition metals not as reactive as alkali metals and akaline earth metals?

transition elements are not as reactive as alkali metals or alkaline earth metals..

this is so because of the valence electronic configurations.

alkali metals have ns1 configurations which have easy chances of loosing electrons so as to gain the stable state. Attaining a stable state is the law of nature.

hence to attain it they have to redily donate electron. this is not so easily possible for the transition elements..