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  • As the S- character of a hybrid orbital decreasesOption: 1 The bond angle decreases.Option: 2

As the S- character of a hybrid orbital decreases

Option: 1

The bond angle decreases.


Option: 2

The bond strength increases.


Option: 3

The bond length decreases


Option: 4

Size of orbital decreases.


Answers (1)

best_answer

 

 

Bond Parameters: length, angle, energy, strength -

Bond angle

It is the angle between any two covalent bonds that share a common atom as shown in figure.

A pair of images are shown. The left image shows a carbon atom with three atoms bonded in a triangular arrangement around it. There are two hydrogen atoms bonded on the left side of the carbon and the angle between them is labeled, “118 degrees” and, “Bond angle.” The carbon is also double bonded to an oxygen atom. The double bond is shaded and there is a bracket which labels the bond, “Bond length ( angstrom ), ( center to center ),” and, “1.21 angstrom.” The right image shows a ball-and-stick model of the same elements. The hydrogen atoms are white, the carbon atom is black, and the oxygen atom is red.

Bond distances (lengths) and angles are shown for the formaldehyde molecule, H2CO.

Bond energy

It is the energy required to break one mole of bonds between two atoms in a gaseous state. For example, the bond enthalpy of H-H bond is  435.8 kJ/mol.

Bond Strength

It is the strength by which the bonded atoms are held together in a molecule. It is measured in terms of the bond energy, in other words, it is the amount of energy required to break the bond.

-

As we have learnt,

Percentage S- character is directly proportional to bond angle.
Percentage S- character is directly proportional to electronegativity.
Percentage S- character is directly proportional to bond strength.
Percentage S- character is inversely proportional to size of orbital and bond length.

Based on above factors, we can conclude that as the S- character of hybrid orbital decreases bond angle decreases.
Hence option number (1) is correct

 

Posted by

sudhir.kumar

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