Give examples for the following:
(a) Ionic chlorides of two different divalent metals.
(b) Two solid covalent compounds.
(c) Two liquid non-polar compounds.
(d) Two gaseous polar compounds.
(e) Two gaseous non-polar compounds.

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Solution

Disclaimer: Any two examples can be quoted.

(a) Ionic chlorides of divalent metals are BeCl₂, CaCl₂ and MgCl₂.
(b) Solid covalent compounds are urea, sugar and glucose.
(c) Liquid non-polar compounds are carbon tetrachloride and benzene.
(d) Gaseous polar compounds are hydrogen sulphide, ammonia and sulphur dioxide.
(e) Gaseous non-polar compounds are hydrogen gas, nitrogen gas, methane gas, oxygen gas and carbon dioxide gas.

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Give 2 examples for each

1)Solid Covalent compounds

2)Gaseous Polar Compounds

3)Liquid Non polar Compounds

4) Gaseous Non Polar Compounds

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Give 2 examples for each

1)Solid Covalent compounds

2)Gaseous Polar Compounds

3)Liquid Non polar Compounds

4) Gaseous Non Polar Compounds

(a) Draw an electron dot diagram to show the structure of each of the following :

(i) Hydronium ion, (ii) Ammonium ion,

(iii) Hydroxyl ion

State the type of bonding present in them.

(b) Give two examples in each case :

(i) Co-ordinate bonds compounds,

(ii) Solid covalent compounds,

(iii) Gaseous polar compounds,

(iv) Gaseous non polar compounds,

(v) Liquid non polar compounds

Q. Molecular compounds are usually formed by the combination between :
(a) a metal and a non-metal
(b) two different non-metals
(c) two different metals
(d) any two gaseous elements

Explain the following:
(a) Covalent compounds are generally gases or liquids or soft solids.
(b) Covalent compounds have low melting point and boiling point.
(c) Non-polar covalent compounds are insoluble in water.
(d) Polar covalent compounds are good conductors of electricity.

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Give examples for the following: (a) Ionic chlorides of two different divalent metals. (b) Two solid covalent compounds. (c) Two liquid non-polar compounds. (d) Two gaseous polar compounds. (e) Two gaseous non-polar compounds.

Give examples for the following:
(a) Ionic chlorides of two different divalent metals.
(b) Two solid covalent compounds.
(c) Two liquid non-polar compounds.
(d) Two gaseous polar compounds.
(e) Two gaseous non-polar compounds.