JEE Main Chemistry question

An atom with atomic number 20 is most likely to combine chemically with the atom whose atomic number is:

(A)11
(B)16Correct
(C)18
(D)10

Answer: (B)

Solution

Atomic number 20 is Ca, a reactive metal that forms compounds by combining with non-metals. Atomic number 16 is S (a non-metal), so Ca readily combines with it (forming ). Atomic number 11 (Na) is also

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Question ID VK-133577