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

The chemical formula for lithium sulfide is LiS2.
The chemical formula for lithium sulfide is LiS 2 .

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

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

The atoms in lithium sulfide are held together by bonds.

Answer 1

The correct statement about lithium sulfide is:

The atoms in lithium sulfide are held together by bonds.

To elaborate on the other options:

1. The chemical formula for lithium sulfide is Li2S, not LiS2. The correct formula indicates there are two lithium atoms for every one sulfur atom.

2. A molecular model of lithium sulfide would consist of two lithium ions and one sulfide ion, which does not just equate to "two spheres" since ions in an ionic bond (as in lithium sulfide) are represented as a lattice rather than discrete molecules.

3. Lithium does form positive ions (Li⁺), but sulfur typically forms negative ions (S²⁻), not positive ions. Therefore, the phrase "Both lithium and sulfur form positive ions" is incorrect.

Overall, the best answer regarding the nature of lithium sulfide involves the bonding of the atoms.