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Why bond angle in SiH 4 is less than CH 4 ? as, bond angle decraeses with increase in size of central atom ,then any exception is there?

Why bond angle in SiH4is less than CH? as, bond angle decraeses with increase in size of central atom ,then any exception is there?

Grade:12th pass

1 Answers

Vikas TU
14149 Points
7 years ago
Both would have same bond angles b/w them as due to the same geometry and same group elements.
However one can object is that due to the weaken bonds in Si it affects the bond angle slightly.
Otherwose the bond angle is same as both have the tetrahedreal geometry.

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