Question

Which of the following is an element?

a. zinc metal (zn)
b. carbon monoxide gas (co)
c. magnesium chloride salt (mgcl)
d. hydrochloric acid (hcl)?

Answer 1

A. Zinc metal

The Element Zinc
Atomic Number: 30
Atomic Weight: 65.38
Melting Point: 692.68 K (419.53°C or 787.15°F)
Boiling Point: 1180 K (907°C or 1665°F)
Density: 7.134 grams per cubic centimeter
Phase at Room Temperature: Solid
Element Classification: Metal
Period Number: 4
Group Number: 12
Group Name: none

Answer 2

A.) Zinc (Zn) is a metal