why ionisation energy of Be is greater than that of B

Question

Answer

as Be-1s²2s²and B-1s²2s²2p¹ it is easier to remove an electron from B than Be

Answer

Be have fully filed orbital so greater ionization than B

Answer

IP of Be greater than that of B because its configuration of outermost shell is 2s^2 while configuration of B is 2s^2 2p^1.fullfilled subshell is more stable and hence more energy is required to remove one electron.

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