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Match the correct ionisation enthalpies and electron gain enthalpies of the following elements.

Elements \Delta H_{1} \Delta H_{2} \Delta_{eg} H
(i) Most reactive non metal A.419 3051 -48
(ii) Most reactive metal     B.1681 3374 -328
(iii) Least reactive element C.738 1451 -40
(iv) Metal forming binary halide D.2372 5251 +48


Answers (1)

Most reactive non metal = B, Most reactive metal = A, Least reactive element = D, Metal forming binary halide = C

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