Question

question 22 (multiple choice worth 3 points) (05.02r mc) which best describes how magnesium (mg) and oxygen (o) bond? they form an ionic bond by exchanging two electrons. they form an ionic bond by exchanging three electrons. they form a covalent bond by sharing one electron. they form a covalent bond by sharing four electrons.

Explanation:

Magnesium is a metal and oxygen is a non - metal. Metals and non - metals typically form ionic bonds. Magnesium has a +2 charge (loses 2 electrons) and oxygen has a - 2 charge (gains 2 electrons), so they form an ionic bond by exchanging two electrons.

Answer:

They form an ionic bond by exchanging two electrons.