A polar covalent bond would form in which one of the following pairs of atoms
A) Cl - Cl
B) Si - Si
C) Ca - Cl
D) Cr - Br
E) P - Cl

Question

Quizplus · Accepted Answer

A polar covalent bond forms when two atoms with different electronegativities bond together, resulting in a partial positive and partial negative charge. Among the given options, the only pair of atoms where this condition is met is P - Cl. Phosphorus has an electronegativity of 2.19, and chlorine has an electronegativity of 3.16, resulting in a difference of 0.97, which indicates a polar covalent bond between them. The other options either have atoms with the same or similar electronegativities or have a higher electronegativity difference, which results in an ionic bond.

A Polar Covalent Bond Would Form in Which One of the Following