D. Hydrochloric acid (HCl) is a compound. The other options (A, B, and C) are not compounds; they are diatomic molecules or elements. A compound consists of two or more different elements chemically bonded together, while the others consist of the same type of atoms or are single elements.
Which of the following is a compound?
Responses
A Nitrogen (N2)Nitrogen (N 2 )
B Hydrogen (H2)Hydrogen (H 2 )
C Helium (He)
D Hydrochloric acid (HCl)
1 answer