3. In a molecule of lithium sulfide, there are two atoms of lithium and one atom of sulfur. Which statement about lithium sulfide is correct? (1 point)

Question

Responses

Both lithium and sulfur form positive ions.
Both lithium and sulfur form positive ions.

The atoms in lithium sulfide are held together by bonds.
The atoms in lithium sulfide are held together by bonds.

The chemical formula of lithium sulfide is LiS2
The chemical formula of lithium sulfide is LiS 2

A molecular model of lithium sulfide would have two spheres...

Answer 1

The correct statement about lithium sulfide is:

The atoms in lithium sulfide are held together by bonds.

Here's a brief explanation for the other options:

1. Both lithium and sulfur form positive ions. - This is incorrect. Lithium does form a positive ion (Li⁺), but sulfur typically forms a negative ion (S²⁻).

2. The chemical formula of lithium sulfide is LiS2. - This is incorrect. The correct chemical formula for lithium sulfide is Li₂S, indicating two lithium atoms for every one sulfur atom.

3. A molecular model of lithium sulfide would have two spheres... - This statement is incomplete, but the molecular model would indeed have two lithium spheres and one sulfur sphere, to represent the 2:1 ratio of the atoms in the compound.

Thus, the second statement is the only correct option as presented in your query.