Non-metallic elements of the s-block of the periodic table are

Calcium (Ca) and Hydrogen (H)

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Hydrogen (H) and Helium (He)

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Potassium (K) and Calcium (Ca)

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Calcium (Ca) and Sodium (Na)

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Solution

The correct option is B Hydrogen (H) and Helium (He)
Only two elements in the s-block i.e., Hydrogen(H) and Helium(He) are gaseous rest all the elements are metals in the s-block of the periodic table.

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