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the bond angle of cl2o is greater than that of h2o despite the fact that the electronegativity of cl is more than that of h (my query is in accordance to bent rule), why is so? please help.

the bond angle of cl2o is greater than that of h2o despite the fact that the electronegativity of cl is more than that of h (my query is in accordance to bent rule), why is so? please help.

Grade:12

5 Answers

Vikas TU
14149 Points
4 years ago
Beacuse Cl is being the larger in size than H atom.
It tends to stretch longer and wide and therefore, tends to have more bond angle.
.
But still the main reason would be the lone pairs present on Cl atom.
Both the Cl atoms tends to repel each other and therfore the bond angle increases.
But in H case it is not so.
Harshita
11 Points
4 years ago
The bond angle of Cl2O is larger than H2O because in case of Cl, P double bonds can be formed as they can expand their shells , double bonds cause more repulsions , and hence bond angle increases.
Yash Deshpande
15 Points
3 years ago
Both the compounds here have same central atom.
But the equatorial atoms are different.
Chlorine is more electronegative than hydrogen and thus chlorine attracts the shared pair of electrons towards itself more strongly than oxygen does. Thus , causing repulsion more than that caused by oxygen in H2O.
 
Adab mann
13 Points
2 years ago
Due to back bonding in Cl2O only one lone pair remains on oxygen and other is converted into pi bond. So hybridisation is SP2 (120°)where as in h20 hybridisation is sp3(109.5°) 
Kushagra Madhukar
askIITians Faculty 629 Points
one year ago
Dear student,
Please find the attached answer to your problem
 
The main reason behind this is the huge gap in size of Cl and H atom.
In both the compounds O is the central atom but, Cl being excessively large with lone pairs causes strong repulsion with the other Cl atom in Cl2O thereby increasing the bond angle. However H is the smallest element and the repulsion between individual H atoms is very weak, thus it has a relatively smaller bond angle.
 
Hope it helps.
Thanks and regards,
Kushagra

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