Question

The Subshell electronic configuration of a few element given(These are not actual symbols)

A 1s2 2s2 2p5
B 1s2 2s2 2p6 3s2
C 1s2 2s2 2p6 3s2 3p6 4s2 3d3
D 1s2 2s2 2p6 3s2 3p6 4s2




1 which of the elements belong to the same group,

2 which of the element belong to the same period

3 Which of them, are not representative elements

4which iS the non metal​

Answer 1

Answer:

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