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Isotopes and Isotones

The atomic nu...

Question

The atomic number of an element x is 12. The element left to it and right to it in same period of periodic table are :

A

Be, Ca

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B

Al, P

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C

K, Li

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D

Na, Al

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Solution

The correct option is C Na, Al
Na has atomic number 11. Aluminium has atomic number 13.

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