Question

which pair of elements will form a metallic bond?
magnesium (mg) & gallium (ga)
magnesium (mg) & carbon (c)
silicon (si) & oxygen (o)

Explanation:

Step1: Recall metallic - bond concept

Metallic bonds form between metal atoms.

Step2: Identify metals in options

Magnesium (Mg) and gallium (Ga) are both metals. Magnesium is an alkaline - earth metal and gallium is a post - transition metal.

Step3: Analyze other options

In the second option, nitrogen (N) is a non - metal and carbon (C) is a non - metal. In the third option, silicon (Si) is a metalloid and oxygen (O) is a non - metal.

Answer:

Magnesium (Mg) & gallium (Ga)