Grade 12Inorganic Chemistry
bond angle is larger inCH4 or in SIH4............................
bond angle is larger inCH4 or in SIH4............................
4 Answers
Khimraj
bond angle of H-C-H and H-Si-H are equal.
Deepak
In case of CH4 and SiH4 bond angle of CH4 is more than SiH4 coz, in between C and Si, C has more electronegativity as compared to silicon so..it attracts more electron towards it. And increases the bond angle!!
Ace
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Its Secret
Bond angle is determined by several factors. Sequentially they are as follows:-
- Hybridisation
- No of lone pairs
- Electronegativity of central atom
- Electronegativity of terminal atom
- Bond order
Now,
- Hybridisation of both CH4 & SiH4 are same ---> sp3
- Both CH4 & SiH4 have zero lone pairs
- Now u guys might be thinking eelectronegativity of C > electronegativity of Si ... So definitely bond angle of CH4 > Bond angle of SiH4 . But this is not the case. The factor "electronegativity of central atom" works only when there is at leat one lp on the central atom.
Hence bond angle of CH4 and SiH4 are same !!
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