An element X reacts with dilute H,504 as well as with NaOH to produce salt and H, (g).
Hence, it may be concluded that:
(1) X is an electropositive element.
oxide of X is basic in nature.
(III) oxide of X is amphoteric in nature.
(IV) X is an electronegative element.
(1) I, II, III
(2) IV, I, 11
(3) III, IV, I
(4) II, III, IV
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