Polyatomic Ions

Q.

Which of these is a polyatomic molecule?

1. Nitrogen

2. Hydrogen

3. Oxygen

4. Sulphur

Q.

Give one example of each of polyatomic cation and a polyatomic anion.

Q.

How many atoms are there in polyatomic molecules?

Q.

By giving examples define the term polyatomic molecules.

Q.

A chemical species that contains 11 protons and 10 electrons can be:

1. An atom
2. A monoatomic anion
3. A polyatomic cation
4. A monoatomic cation

1. 1 only

2. 4 only

3. 3 & 4

4. 2 & 4

Q.

Which of these is a polyatomic ion?

${{SO}_4}^{2-}$, ${{NO}_3}^{-}$, ${{CO}_3}^{2-}$

1. 

2. (NO₃)^-1

3. All of the given options are correct.

4. (CO₃)^-2

Q.

$({NH}_4{)}^{+}$, $({SO}_4{)}^{2-}$ are examples of _________________.

1. Atoms

2. Monoatomic ions

3. Compound

4. Polyatomic Ions

Q. Which of the following are polyatomic ions?

1. ${N{H}_4}^{+}$
2. ${S{O}_4}^{2-}$
3. ${Mn{O}_4}^{-}$
4. $C{l}^{-}$

Q. Select the polyatomic ions.

1. ${{\mathrm{NO}}_3}^{-}$
2. ${\mathrm{Cl}}^{-}$
3. $H_3{O}^{+}$
4. ${\mathrm{Na}}^{+}$
5. ${\mathrm{OH}}^{-}$
6. ${{\mathrm{SO}}_4}^{2-}$
7. ${{\mathrm{NH}}_4}^{+}$
8. ${\mathrm{Cu}}^{2+}$

Q.

………… is a triatomic molecule.

Q. give reason why the molecule of a oxygen is stable but an atom of Oxygen is unstable

Q. An ion that consists of more than one atoms is known as a polyatomic ion.

1. True
2. False

Q. Carbonate ion is a __________ ion.

1. monovalent
2. trivalent
3. pentavalent
4. divalent

Q. Carbonate ion is a __________ ion.

1. trivalent
2. divalent
3. monovalent
4. pentavalent

Q. Choose the correct pair.

1. 
2. Nitrate ion
3. 
4. Ammonium ion
5. Phosphate ion
6. 

Q. Cyanide ion consists of which of the following atoms?

1. Carbon and nitrogen
2. Carbon and oxygen
3. Oxygen and nitrogen
4. Hydrogen and nitrogen

Q. Which of the following does not represents a polyatomic ion?

1. Sulphite
2. Chloride
3. Sulphate
4. Phosphate