Question

The value of covalent bonf length of $Si-C$ is $1.93\mathring{A}$. Covalent radius of carbon atom is $0.77\mathring{A}$. Calculate the covalent radius of silicon atom.

Answer 1

Bond length of $Si-C\left(d\right)=1.93\stackrel{°}{A}$

Radius of carbon atom $\left(r_C\right)=0.77\stackrel{°}{A}$

Radius of silicon atom $\left(r_{Si}\right)=?$

As we know that,

$d=r_C+r_{Si}$

$\Rightarrow r_{Si}=d-r_C$

$\Rightarrow r_{Si}=1.93-0.77=1.16\stackrel{°}{A}$

Hence the radius of silicon atom is $1.16\stackrel{°}{A}$.