Question

which type of hydroxide and oxide formed non metal
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Answer 1

Answer:

Those reacting only by bases are called "acidic oxides". Oxides that react with both are amphoteric. Metals tend to form basic oxides, non-metals tend to form acidic oxides, and amphoteric oxides are formed by elements near the boundary between metals and non-metals (metalloids).

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Answer 2

Explanation:

Reaction of a metal oxide with a nonmetal oxide gives an oxysalt; reaction of a metal hydroxide with a nonmetal oxide produces a "hydrogen" oxysalt. This is essentially a reaction of the O2- or OH- in the metal compound with the molecular nonmetal oxide.