Given the table of electronegativity values below, which of the following bonds would be considered polar covalent ?
I. C - H
II. C - S
III. C - O Electronegativity Element Value H₂ .1 C 2.5 S 2.5 O₃ .5

Question

Quizplus · Accepted Answer

The electronegativity difference between C and H is 2.5 - 2.1 = 0.4, which is less than 1.7, the threshold for a polar covalent bond. The electronegativity difference between C and S is 2.5 - 2.5 = 0, which is also less than 1.7. However, the electronegativity difference between C and O is 2.5 - 3.5 = -1, which is greater than 1.7, indicating a polar covalent bond. Therefore, the correct answer is E) I and III.

Given the Table of Electronegativity Values Below, Which of the Following