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Question

All the alkali metals have valency :

A
+1
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B
2
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C
1
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D
+2
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Solution

The correct option is A +1
The alkali metals have 1 valence electron and are electropositive in nature.

They are soft metallic solids, with characteristic metal properties of shiny luster and high thermal and electrical conductivities. The alkali metals have low densities and melting points, increasing and decreasing respectively with increasing atomic mass.


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