Asked in Premeth Test 25 — S and P Block ElementsModerate

The radii of H, H+ and H- are in the order of

Correct answer: C. H->H>H+

A. H+>H>H-
B. H>H->H+
C. H->H>H+
D. H>H+>H

Explanation

Cationic radius > Atomic radius > Anionic radius. The correct answer is C) H- > H > H+. The correct order of radii is H- > H > H+. The hydride ion (H-) has the largest radius, followed by the hydrogen atom (H), and the hydrogen ion (H+) has the smallest radius.

Last updated 1 September 2026

About s-Block and p-Block Elements

The s and p blocks are studied through their valence-shell configurations, periodic trends and characteristic chemical properties. Work covers the reactions of Group I and Group II elements, the behaviour of Group IV elements, and how atomic size, ionization energy, electronegativity and metallic character change across periods and down groups.

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The radii of H, H+ and H- are in the order of

About s-Block and p-Block Elements

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