Question

Which is most likely a covalent compound?

LiF
MgS
NH3
CaCl2

Answer 1

Among the compounds listed, **NH3 (ammonia)** is the most likely to be a covalent compound.

Here's a brief explanation of each:

- **LiF (lithium fluoride)** - This is an ionic compound formed between lithium (a metal) and fluorine (a non-metal).
- **MgS (magnesium sulfide)** - This is also an ionic compound formed between magnesium (a metal) and sulfur (a non-metal).
- **NH3 (ammonia)** - This compound is formed from nitrogen (a non-metal) and hydrogen (a non-metal), which typically share electrons, indicative of covalent bonding.
- **CaCl2 (calcium chloride)** - This is another ionic compound formed from calcium (a metal) and chlorine (a non-metal).

Thus, NH3 is the covalent compound among those listed.