Chemistry Tutorial

Problem 14: Electronegativity

Carbon and oxygen have electronegativities of 2.5 and 3.5 respectively. Which atom would make a covalent bond with hydrogen (electronegativity= 2.1) that has a higher degree of polarity?

B.	oxygen
	Correct. Oxygen has a very high electronegativity (3.5) compared with hydrogen (2.1) and will form a polar bond when there is a covalent linkage between C and H.