Question

a) In the formation of compound between two atoms A and B. A loses two electrons and B gains one electron.​

Answer 1

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11th

Chemistry

Chemical Bonding and Molecular Structure

Basics of Chemical Bonding

In the formation of compoun...

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Asked on December 27, 2019 by

Shubhra Yasmin

In the formation of compound between two atoms A and B, A looses two electrons and B gain one electron.

(a) What is the nature of bond between A and B?

(b) Explain the formation of MgCl

2

molecule.

(c) Common salt conducts electricity only in the molten state. Why?

(d) Why is melting point of NaCl high?

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ANSWER

(a) Since the bond formation involves loss and gain of electrons, the bond formed must be ionic.

(b) Formation of MgCl

2

molecule:

Mg→Mg

2+

+2e

−

2Cl+2e

−

→2Cl

−

∴Mg

2+

+2Cl

−

→MgCl

2

(c) When NaCl is melted, the ions become mobile. Due to this they can conduct electricity.

(d) Due to strong electrostatic interactions between the ions Na

+

& Cl

−

, more energy is required to break this interaction. Hence, due to this it has high melting point.