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 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.

Answer 1

The correct statement about lithium sulfide is:

The atoms in lithium sulfide are held together by bonds.

Here's a brief explanation of why the other statements are incorrect:

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

2. The chemical formula for lithium sulfide is LiS2. - This is incorrect. The correct chemical formula for lithium sulfide is Li₂S, as it contains two lithium ions for every one sulfide ion.

3. A molecular model of lithium sulfide would have two spheres. - This is misleading because, in a typical ionic model, lithium sulfide would represent the arrangement of atoms in a crystal lattice structure rather than just two spheres; in fact, it consists of multiple Li⁺ and S²⁻ ions held together in a three-dimensional structure.

Thus, the statement about the atoms being held together by bonds is the only accurate statement regarding lithium sulfide.