Question

 (i) Ionisation enthalpy of Mg is more than that of Na and Al.Explain why ?

      (ii) Explain why the electron affinity of fluorine is unexpectedly less then chlorine. (1.5+1.5)

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Answer 1

Explanation:

1). because the electronic configuration of mg is half filled which is more stable than Na and Al

2). because of small size the schielding effect is seen in F

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