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NaCl is an ionic compound which gives Na + and Cl – ions in aqueous solution. Cl - ions combine with Ag + ions of AgNO 3 to form a precipitate of AgCl. On the other hand, CCl 4 is a covalent compound and does not give Cl ions.

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Chemical Bonding and Molecular Structure

Short Answer Type

11. Draw the Lewis structure for the ionic compound by aluminium and fluorine.

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12.

Two elements A and B have the electronic configuration as:
A = 1s²2s²2p⁶3s² and B = 1s²2s²2p⁵Write the empirical formula of the substance containing A and B.

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13.

What type of bonding would you expect between:
(i) a metal and a non-metal
(ii) a non-metal and another non-metal?

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14.

Give reasons in one or two sentences for the observation that in their compounds non-metals form anions and not cations.

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15.

Out of Na and K, which will form a more stable ionic bond?

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16.

Which will have a greater lattice enthalpy: NaCl or MgO?

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17.

Is a covalent molecule always formed between two similar atoms?

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18.

Why sodium chloride is a solid whereas carbon tetrachloride is a liquid?

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19.
Why NaCl gives a white percipitate with AgNO₃ solution but CCl₄ does not?

NaCl is an ionic compound which gives Na⁺ and Cl^– ions in aqueous solution. Cl^-ions combine with Ag⁺ ions of AgNO₃ to form a precipitate of AgCl. On the other hand, CCl₄ is a covalent compound and does not give Cl ions.

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