Chapter 4

NCERT
Class 9
Science
Solutions
12. If Z = 3, What would be the valency of the element ? Also name the element.

Question:

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

Answer:

Atomic number of element (Z) = 3

Electronic configuration = 2, 1

Number of electron in K = 2 and L = 1

Valence electron = 1

Valency = 1

Name of element = Lithium

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