An element ‘A’ has atomic number 11, name the period and group num – InterviewSolution

1.

An element ‘A’ has atomic number 11, name the period and group number to which it belongs.

Answer»

‘A’ – atomic number = 11

Electronic configuration = K L M 2, 8, 1

∴ Period number = Shell No. = 3

Group number = Valence electron= 1

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