Question

which of the following is a metal? sulfur hydrogen calcium argen

Explanation:

Step1: Recall metal properties

Metals are elements that are typically good conductors of heat and electricity, have a shiny luster, and are malleable and ductile.

Step2: Analyze each element

• Sulfur (\(S\)) is a non - metal. It is brittle and a poor conductor of heat and electricity.
• Hydrogen (\(H\)) is a non - metal. It is a gas at room temperature and does not have metallic properties.
• Calcium (\(Ca\)) is an alkaline earth metal. It has metallic luster (when freshly cut), is a good conductor of electricity (to some extent as a metal), and has metallic bonding.
• Argon (\(Ar\)) is a noble gas. It is a gas at room temperature and has no metallic properties.

Answer:

Calcium