Beryllium the configuration is [He] 2s2 i.e fully filled but still quite reactive
Also in neon [He]2p4 , neither half filled nor fully filled, still quite stable compound (As it forms compound with oxygen)
I have read that half filled orbitals are extra stable due many possible rearrangement of electron I.e symmetrical , this statement was used explain stability of half filled d orbital as explained here Why are full and half filled orbitals the most stable?
my question Why cant we apply the concept of stability of fully filled d orbital to p and s orbital?
My question is different as I try to ask explanation for not using half filled orbital stability reasoning in case of p and s orbital 1) Why is fluorine the most electronegative atom? 2)Why are atoms with eight electrons in the outer shell extremely stable?
Second part is not dealt with in the answers 3)Why do elements in columns 6 and 11 assume 'abnormal' electron configurations?