Question

which elements do not show variable valency​

Answer 1

Answer:

sodium calcium and magnesium

Explanation:

sodium Na

calcium Ca

magnesium Mg

Answer 2

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The electronic configuration of Zn is

[ Ar ] 3d¹⁰ 4s². Hence due to complete d-subshell, it does not show variable valency.

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√Kᴇᴇᴘ Lᴇᴀʀɴɪɴɢ~

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