First slide

Hydrogen

Question

The property of hydrogen which distinguishes it from other alkali metals is

Easy

A

Its electropositive character
B

Its affinity for non-metals
C

Its reducing character
D

Its non-metallic character

Solution

Like alkali metals
⇒ It [hydrogen] form unipositive ion H⁺ [ It indicates the electropositive character} Examples : (1) HCl → H⁺ + Cl^-(2) NaCl → Na⁺ + Cl
⇒ It also has high affinity for non--metals.
examples : HCl^- , NH₃ , H₂Oetc
⇒ It also acts as reducing aqent
examples : CuO + H₂ → Cu + H₂O
But hydrogen shows non metallic character, where as Alkali metals are purley metals.

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