Question

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) Responses A molecular model of lithium sulfide would have two spheres. A molecular model of lithium sulfide would have two spheres. 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 . Both lithium and sulfur form positive ions. Both lithium and sulfur form positive ions.

Answer 1

The correct statement about lithium sulfide (Li2S) from the given options is:

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

Here’s a breakdown of the other options to clarify why they are incorrect:

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

  • This is somewhat misleading; while it does have two lithium atoms and one sulfur atom, the molecular model also represents them through ionic bonding in the solid state, not just as discrete molecules.

• The chemical formula for lithium sulfide is LiS2.

  • This is incorrect; the correct chemical formula for lithium sulfide is Li2S.

• Both lithium and sulfur form positive ions.

  • This is incorrect; lithium forms positive ions (Li+), while sulfur typically forms negative ions (S²⁻).

So the most accurate statement among those provided is about the bonding of the atoms.