The reaction of a metal, M, with a halogen, X2, proceeds by an exothermic reaction as indicated by this equation: M(s) + X2(g) ⟶ MX2(s). For each of the following, indicate which option will make the reaction moreexothermic. Explain your answers.(a) a large radius vs. a small radius for M+2(b) a high ionization energy vs. a low ionization energy for M(c) an increasing bond energy for the halogen(d) a decreasing electron affinity for the halogen(e) an increasing size of the anion formed by the halogen

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d-Block Elements

According to the modern form of periodic table, 118 elements are present which are subdivided as four blocks, namely, s, p, d and f-block elements based on the entry of the valence electron or last electron into which orbital.