Question

with explaination.......

Answer 1

hey mate!

electronic configuration of

Be =1s2 2s2

it show's its outer orbit is fulfilled..
so it is stable..
having high electron enthalpy..
i.e requires more energy to remove electron

but in case of boron

B=1s2 2s2 2p1

its outermost shell have only one electron.. in p orbital ...which can be removed easily..
having low electron enthalpy.

correct answer is optipn b

hope it will help you..

#phoenix