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Introduction to Atomic Structure

The pair havi...

Question

The pair having elements with atomic number double to the atomic number of another element is:

Ca, Na

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B, C

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Mg, Cr

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Ar, Ne

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Solution

The correct option is C Mg, Cr
The atomic number of magnesium is $12$ and the atomic number of chromium is $24$ which is double the atomic number of magnesium.

Hence, the correct option is $C$

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