Question

Which of the following two elements will likely form a covalent bond? N and O K and Cl Li and F Na and Sr

Answer 1

Answer: N and O

Step-by-step explanation:

An ionic bond is formed when a metal completely transfers its valence electron to a non metal.

Covalent bond is formed by sharing of electrons between two non metals.

A. N and O both are non metals and thus form a covalent bond.

B. K is a metal and Cl is a non metal and thus form an ionic bond.

C. Li is a metal and F is a non metal and thus form an ionic bond.

D. Na and Sr both are metals

Answer 2

Covalent bonds are also called molecular bonds. These chemical bondings involves atoms sharing electron pairs. Covalent bonding usually happen between 2 non-metals. Non metals are usually found in the left and right most sides of the periodic table. Hence, the answer will be A. N and O since both elements are non-metals.