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The electronic configurations of the ...

The electronic configurations of the four elements A, B, C and D are given below:
A - 2, 1 `" "` B - 2, 2 `" "` C - 2, 8, 2 `" "` D - 2
(a) Which amongst these elements belong to same group? Write chemical name of any one of these.
(b) Which amongst these elements belong to same period? Write chemical name of any one of these.
(c) Which amongst these is not a metal? Write its chemical name.

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To solve the question step by step, let's analyze the electronic configurations of the elements A, B, C, and D. ### Given Electronic Configurations: - A: 2, 1 - B: 2, 2 - C: 2, 8, 2 - D: 2 ...
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