Question

Chlorine in the Periodic Table is surrounded by the elements with atomic number 9, 16, 18 and 35.

(a) Which of these have Physical and Chemical properties resembling chlorine ?

(b) Which is more electronegative than chlorine ?

Answer 1

(a) 35,9

(b)

Nitrogen is more electronegative than Chlorine.

FON- Fluorine Oxygen Nitrogen . These are the most electronegative element respectively.

Nitrogen should be more electronegative, because:

1. NCl3 in H2O gives NH3 and HOCl, which proves that nitrogen is negatively charged because it attracts the positively charged hydrogen in H2O to form NH3 and chlorine combines with the negatively charged HO- radicals.
2. HNO3 is stronger that HClO3, though chlorine and nitrogen have the same oxidation state (+5) pKa HNO3= -1.4 pKa HClO3= -1
3. According to Allen electronegativity scale, nitrogen has 3.07 and chlorine has 2.88