increasing order of atomic radii of the elements B, Al, C, Si, is
a- si, al, c, b
b- B, C, Al,Si,
c- Al, Si, B, C
D- C, B, Si, Al
The correct order of atomic radius of the elements in the question are :
D ) C<B<Si<Al
This is because atomic radius increases down the group thus Si and Al have larger atomic radius than C and B.
Since atomic radius of elements decreases along a period thus Al will have a larger radius than Si and similarly B ill have larger radius than C.Thus overall increasing order of the atomic radius would be :
C<B<Si<Al
D ) C<B<Si<Al
This is because atomic radius increases down the group thus Si and Al have larger atomic radius than C and B.
Since atomic radius of elements decreases along a period thus Al will have a larger radius than Si and similarly B ill have larger radius than C.Thus overall increasing order of the atomic radius would be :
C<B<Si<Al