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Question

An element ‘X’ is forming an acidic oxide. Its position in modern periodic table will be:


A

acidic oxides

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B

Group 2 and Period 3

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C

Group 13 and Period 3

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D

Group 16 and Period 3

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Solution

The correct option is D

Group 16 and Period 3


The explanation for the correct option:

(D) Acidic oxides: The oxides which furnish an acid on dissolution in water are called acidic oxides. Examples: Oxides of non-metals

  • Non-metals form acidic oxides and are placed in group 16 of all the periods of the modern periodic table.
  • Examples: Oxides of Sulphur
  • The group 16 elements of the modern periodic table consist of 5 elements oxygen, sulfur, selenium, tellurium, and polonium.

The explanation for the incorrect options:

(A) Group 1 and Period 3: It is an alkali metal and its oxide is basic in nature. Basic oxides furnish a base on dissolution in water.

(B) Group 2 and Period 3: It is an alkaline earth metal. This oxide is also basic in nature due to its metallic characteristics.

(C) Group 13 and Period 3: Aluminium forms amphoteric oxides i.e.; oxides that behave both as an acid and a base.

Hence, option (D) is correct.


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