Parameters of Covalent Bond

Author:Maharashtra Board

11th Maharashtra Board

IMPORTANT

Parameters of Covalent Bond: Overview

In this topic, we will understand the meaning of bond enthalpy. It highlights the concept of bond angle and bond order. We will learn how to identify the polarity of a covalent bond with the help of various examples.

Important Questions on Parameters of Covalent Bond

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IMPORTANT

Chemistry>Chemical Bonding>Parameters of Covalent Bond> Q 1

Covalent bond is directional in nature. Justify.

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IMPORTANT

Chemistry>Chemical Bonding>Parameters of Covalent Bond> Q 2

Using data from the table, answer the following :

Examples	$C_{2} H_{6}$ Ethane	$C_{2} H_{4}$ Ethene	$C_{2} H_{2}$ Ethyne
Structure	$- {}_{/}^{∖}C - C_{∖}^{/} -$	${}_{/}^{∖}C = C_{∖}^{/}$	$- C \equiv C -$
Type of bond between carbons	single	double	triple
Bond length (nm)	$0.154$	$0.134$	$0.120$
Bond enthalpy $KJ {mol}^{- 1}$	$348$	$612$	$837$

Indicate the relation between bond strength and bond enthalpy.

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Chemistry>Chemical Bonding>Parameters of Covalent Bond> Q 3

Using data from the table, answer the following :

Examples	$C_{2} H_{6}$ Ethane	$C_{2} H_{4}$ Ethene	$C_{2} H_{2}$ Ethyne
Structure	$- {}_{/}^{∖}C - C_{∖}^{/} -$	$> C = C <$	$- C \equiv C -$
Type of bond between carbons	single	double	triple
Bond length (nm)	$0.154$	$0.134$	$0.120$
Bond enthalpy $KJ {mol}^{- 1}$	$348$	$612$	$837$

Which is the most stable compound?

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IMPORTANT

Chemistry>Chemical Bonding>Parameters of Covalent Bond> Q 4

Using data from the table, answer the following :

Examples	$C_{2} H_{6}$ Ethane	$C_{2} H_{4}$ Ethene	$C_{2} H_{2}$ Ethyne
Structure	$- {}_{/}^{∖}C - C_{∖}^{/} -$	${}_{/}^{∖}C = C_{∖}^{/}$	$- C \equiv C -$
Type of bond between carbons	single	double	triple
Bond length (nm)	$0.154$	$0.134$	$0.120$
Bond enthalpy $KJ {mol}^{- 1}$	$348$	$612$	$837$