Three elements, X, Y, and Z belong to the same period. Their oxides are acidic, amphoteric, and basic respectively. The order of these elements in the periodic table is

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X, Y, Z

Z, Y, X

X, Z, Y

Y, Z, X

answer is D.

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Detailed Solution

It is given that the oxide of X is acidic, Y is amphoteric, and Z is Basic.

It is known that the oxides of non-metals are acidic and metals are basic.

From left to right in a period, metallic character of elements decreases and their non-metallic character increases. This means that basic character of oxides decreases and the acidic nature of oxides increases.

So, Z is a metal comes first while moving along the period from left to right, X is a non-metal comes last and Y is amphoteric so lies between Z and X only.

Hence, option (d) is the answer.

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