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Question:

If Z=3, what would be the valency of the element? Also, name the element.

  • CBSE Class IX
Updated On: Jan 19, 2026
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Solution and Explanation

By Z = 3, we mean that the atomic number of the element is 3.
Its electronic configuration is 2, 1.
Hence, the valency of the element is 1 (since the outermost shell has only one electron).

Therefore, the element with Z = 3 is lithium.

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