Set of elements with the following atomic numbers belongs to the same

1.	Set of elements with the following atomic numbers belongs to the same group 1) 24, 47, 42, 55 2) 11, 19, 27, 5 3) 12, 20, 4, 38 4) 9, 16, 35, 3
Answer» 3) 12, 20, 4, 38 ₄Be, ₁₂Mg , ₂₀Ca, ₃₈Sr

Set of elements with the following atomic numbers belongs to the same group 1) 24, 47, 42, 55 2) 11, 19, 27, 5 3) 12, 20, 4, 38 4) 9, 16, 35, 3

Answer»

3) 12, 20, 4, 38

₄Be, ₁₂Mg , ₂₀Ca, ₃₈Sr

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Set of elements with the following atomic numbers belongs to the same group 1) 24, 47, 42, 55 2) 11, 19, 27, 5 3) 12, 20, 4, 38 4) 9, 16, 35, 3

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