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. Both lithium and sulfur form positive ions. Both lithium and sulfur form positive ions. The chemical formula for lithium sulfide is LiS2

Answer 1

The correct statement about lithium sulfide is: The atoms in lithium sulfide are held together by bonds.

Here are explanations for each of the options provided:

1. A molecular model of lithium sulfide would have two spheres. - This is incorrect because it would actually have three spheres representing the two lithium atoms and one sulfur atom.

2. The atoms in lithium sulfide are held together by bonds. - This is correct. In lithium sulfide (Li2S), lithium (Li) atoms donate electrons to sulfur (S), forming ionic bonds.

3. Both lithium and sulfur form positive ions. - This is incorrect. Lithium forms positive ions (Li⁺), but sulfur typically forms negative ions (S²⁻) by gaining electrons.

4. The chemical formula for lithium sulfide is LiS2. - This is incorrect. The correct formula is Li2S, indicating two lithium ions for every sulfur ion.

Thus, the most accurate statement is about the bonds holding the atoms together.