Oxiacids of Phosphorous S N Cl ||Chap 07 p-Block elements || 12th NEET || IIT JEE

Configuration Of S And P Block Elements

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Atomic numbers of few elements as 56,57,72,89,49,38,46 among then No of S-block elements = X No of P-block elements =Y No of d-block elements =Z Then X +Z - Y value is

Atoms of d-block elements in a given period are smaller than those of s-block elements but bigger than those of p-block elements. However, the variation within a given series is quite small because

Assertion (A): s- block elements can form ionic hydrides. Which on electrolysis in fused state give H_(2) gas at cathode. Reason (R) : s-block elements have low IE and low EN as compared to p-block elements.