Phosphorus and chlorine form bond is covalent bond.
A covalent bond is likely to form if the difference in electronegativity between the elements is less than 1.7.
For instance, the electronegativity of phosphorus (P) is 2.1 and that of chlorine (Cl) is 3.0.
These two numbers are differentiated by 0.9. Since 0.9 is lesser than 1.7, phosphorus and chlorine form a covalent bond.
Chlorine and phosphorus are both found on the right side of the periodic table, which is where nonmetals are. As a result, a covalent bond will be formed between the two nonmetals.
So, we can say that covalent bond is between phosphorus and chlorine.
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