1.

In this ladder, symbols of elements are jumbled up. (a) Rearrange these symbols of elements in the increasing order of their atomic numbers in the periodic table. (b) Arrange them in the order of their group alos.

Answer»

Solution :H, He, Li, Be, B, C, N, O, F, NE, Na, Mg, Al, SI, P, S, Cl, Ar, K, CA,


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