Chapter 12, Problem 1STP

Interpretation Introduction

Interpretation:

The most electronegative atom is to be given.

Concept introduction:

An atom is electronegative which has tendency to attract shared pair of electrons towards itself.

Answer to Problem 1STP

C

Explanation of Solution

Chlorine is most electronegative among the four given options. Because it requires only one electron to complete the octet and it belongs to group 17 (halogen family).

Conclusion

Option A is incorrect because sodium is metal which is electropositive in nature.

Option B is incorrect because left to right electronegativity increases. So, electronegative value of phosphorus is less than chlorine.

Option D is incorrect because down the group electronegativity decreases. So iodine is less electronegative than chlorine.