Question

Complete the table given below

Element atomic no.
Electron distribution
valence electrons

a) Lithium
b) Boron

please explain the answer.
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Answer 1

Explanation:

any explanation is not possible for it my dear friend

Answer 2

Answer:

Element Atomic no. Electronic Dist. Valence el.

Lithium. 3. 2,1. 1.

Boron. 5. 2,3. 3.