Question

42. The single covalent radius of P is 0.11 nm. The single covalent radius of Cl will be :
(a) smaller than P (b) greater than P (c) same as P (d) twice of P​

Answer 1

Answer:

a.Smaller than P

Explanation:

The single covalent radius of P =0.11 nm

When we go from up to bottom then the number of shell increases and number of electron increases.When the number of shell increases then size of atom increases and the radius of atom is also increases.

When we go from left to right in  a period then then number of electrons in the same shell  increases and nuclear charge is also increases.When the nuclear charge increases then the size of atom  decreases.

When we go from P to Cl then we go in a period.

The element P and Cl  belongs to period 3 but P belongs to group 15 and Cl belongs to group 17.

P comes before Cl in a period.

Then , the size of Cl is smaller than the size of P due to increase in nuclear pull by addition of electron in the same shell.

Hence, the covalent radius of Cl is smaller then the covalent  radius of P.

Answer:a.Smaller than P

Answer 2

Answer:

P comes before Cl in a period. Then , the size of Cl is smaller than the size of P due to increase in nuclear pull by addition of electron in the same shell. Hence, the covalent radius of Cl is smaller then the covalent radius of P.