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Electronic Configuration

Find the numb...

Question

Find the number of element( s) which is/are present in group-I :
Be, Li, Mg, AI, Na, Ca, Cs

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Solution

The number of elements that are present in group-I is 3.
Li, Na and Cs are present in group IA.
Be, Mg and Ca are present in group IIA
Al is present in group IIIA.

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