Match the radicals in List I with their correct names from List II. List I List II 1. NO 3 1 - a. Bisulphite 2. HSO 4 1 - b. Phosphate 3. SO 4 2 - c. Carbonate 4. PO 4 3 - d. Nitrite 5. HCO 3 1 - e. Bicarbonate f. Sulphate g. Nitrite h. Phosphite i. Sulphite j. Bisulphate

NO 3 1 - is known as nitrite ion. It contains one nitrogen and three oxygen atoms. HSO 4 1 - is known as bisulphate ion. It contains one hydrogen, sulphur and four oxygen atoms. SO 4 2 - is known as sulphate ion. It contains one sulphur and four oxygen atoms. PO 4 3 - is known as phosphate ion. It contains one phosphorus and four oxygen atoms. HCO 3 1 - is known as bicarbonate ion. It contains one hydrogen, one carbon and three oxygen atoms. List I List II 1. NO 3 1 - d. Nitrite 2. HSO 4 1 - j. Bisulphate 3. SO 4 2 - f. Sulphate 4. PO 4 3 - b. Phosphate 5. HCO 3 1 - e.Bicarbonate

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Simplified Chemistry>Chapter 4 - Atomic Structure>OBJECTIVE TYPE QUESTIONS>Q 2

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The basic unit of matter not capable of independent existence.

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Important Questions on Atomic Structure

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Simplified Chemistry>Chapter 4 - Atomic Structure>OBJECTIVE TYPE QUESTIONS>Q 2

The smallest particle of a substance - capable of independent existence & which retains the characteristics of the substance.

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Simplified Chemistry>Chapter 4 - Atomic Structure>OBJECTIVE TYPE QUESTIONS>Q 2

An elementary particle of matter of a group of atoms of different elements behaving as a single unit with a charge on the group.

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Simplified Chemistry>Chapter 4 - Atomic Structure>OBJECTIVE TYPE QUESTIONS>Q 2

Imaginary path around the nucleus of an atom in which electrons revolve.

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Simplified Chemistry>Chapter 4 - Atomic Structure>OBJECTIVE TYPE QUESTIONS>Q 2

The term for the combining capacity of an element or the number of hydrogen atoms with which it combines or replaces.

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Simplified Chemistry>Chapter 4 - Atomic Structure>OBJECTIVE TYPE QUESTIONS>Q 3

Match the radicals in List I with their correct names from List II.

List I	List II
1. ${NO}_{3}^{1 -}$	a. Bisulphite
2. ${HSO}_{4}^{1 -}$	b. Phosphate
3. ${SO}_{4}^{2 -}$	c. Carbonate
4. ${PO}_{4}^{3 -}$	d. Nitrite
5. ${HCO}_{3}^{1 -}$	e. Bicarbonate
	f. Sulphate
	g. Nitrite
	h. Phosphite
	i. Sulphite
	j. Bisulphate