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Which of the following elements will form an acidic oxide?

(a) An element with atomic number 7
(b) An element with atomic number 3
(c) An element with atomic number 12
(d) An element with atomic number 19

Answers (1)

Ans (a)
Sol

Non Metals form an acidic oxide and Metal forms basic oxides
Element with atomic number 7:  Nitrogen - Non-metal
Element with atomic number 3:  Lithium - Metal
Element with atomic number 12: Magnesium - Metal
Element with atomic number 19: Potassium - Metal
So element with atomic number 7 forms acidic oxide.

Hence option (a) is correct.

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