Complete the following chart :ElementElectronic ConfigurationGroup NumberNa(2, 8, 1)Group – 1Al(2, 8, 3)..............

Q.1 (B)(ii) Complete the following chart :

Element	Electronic Configuration	Group Number
Na	(2, 8, 1)	Group – 1
Al	(2, 8, 3)	..............

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Answer: Group 13

Aluminium has the configuration 2, 8, 3, so it has 3 valence electrons. Elements with 3 valence electrons in the third period belong to group 13 (the boron family). Sodium with 1 valence electron is in group 1.

Doubtly AI · 25 Oct 2026 AI-verified · Oct 2026 Report

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Complete the following chart :ElementElectronic ConfigurationGroup NumberNa(2, 8, 1)Group – 1Al(2, 8, 3)..............

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