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Standard XII
Chemistry
S Block Elements
Which pair of...
Question

Which pair of atomic number represent s-block elements?

A
7, 15
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B
6, 14
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C
9, 17
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D
4, 12
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Solution

The correct option is D 4, 12
The elements with atomic numbers 4, 12 are B and Mg respectively. They are alkaline earth metals and belong to the S block of the periodic table.

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