Question

when we draw pictures of molecules we often use a single solid line to represent the pair of electrons that are being shared. which pair of atoms below has the strongest covalent bond? a. c—c b. o==o c. n===n d. h—h

Explanation:

Step1: Recall bond - strength principle

The strength of a covalent bond depends on bond energy. Triple bonds are stronger than double bonds, and double bonds are stronger than single bonds. Also, shorter bonds are stronger.

Step2: Analyze each option

• Option A: C - C is a single bond with a bond energy of about 347 kJ/mol.
• Option B: O = O is a double bond with a bond energy of about 498 kJ/mol.
• Option C: N≡N is a triple bond with a bond energy of about 941 kJ/mol.
• Option D: H - H is a single bond with a bond energy of about 436 kJ/mol.

Answer:

C. N≡N