1.

Which of the given elements A, B, C, D, and E with atomic number 3, 11, 15, 18, 19 respectively belong to the same group (a) A, B, C (b) B, C, D (c) A, D, E (d) A, B, E

Answer»

B, C, D element with atomic number 3, 11, 15, 18, 19 respectively belong to the same group.



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