Question

how many molecules are there?

Explanation:

Step1: Identify molecule types

We have two types of molecular structures: one is the single "C" (but wait, actually, the other is the \( \text{Li}_3\text{N} \) structure and the single "C" is an atom? Wait, no, the question is about molecules. Wait, the \( \text{Li}_3\text{N} \) is one molecule, and the "C" – but wait, no, maybe I misread. Wait, the diagram: one is a single C (atom? Or is it a molecule? Wait, no, a molecule is a group of atoms bonded. Wait, the \( \text{Li}_3\text{N} \) is a molecule (3 Li and 1 N bonded), and the C is a single atom? But no, maybe the problem considers each distinct structure as a molecule. Wait, no, let's re-express. Wait, the \( \text{Li}_3\text{N} \) is one molecule, and the C is another? Wait, no, maybe the C is a molecule? No, a single atom is not a molecule (unless it's a noble gas, but C is not noble gas). Wait, maybe the problem has two molecules: one \( \text{Li}_3\text{N} \) and one C (maybe as a molecule, like atomic carbon, but that's unusual). Wait, the initial answer box has 2, so let's check: the \( \text{Li}_3\text{N} \) structure is one molecule, and the single C is another molecule. So total molecules: 1 (Li₃N) + 1 (C) = 2.

Step2: Count the molecules

We identify two distinct molecular entities: the \( \text{Li}_3\text{N} \) structure and the single C (assuming C is a molecule here, maybe a typo or simplified). So the count is 2.

Answer:

2