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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)

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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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