Students are completing a table about a particular subatomic particle that helps make up an atom.

\begin{tabular}{|l|l|l|}
\hline
Mass (amu) & Location & Charge \\
\hline
[tex]$1 / 2,000$[/tex] & & Has a charge \\
\hline
\end{tabular}

What best explains how they should complete the table?

A. with "Inside the nucleus," because the particle is a proton
B. with "Inside the nucleus," because the particle is a neutron
C. with "Outside of the nucleus," because the particle is a proton
D. with "Outside of the nucleus," because the particle is an electron



Answer :

To determine how to complete the table, let's analyze the information given:

1. Mass (amu): The subatomic particle has a mass of \( \frac{1}{2000} \, \text{amu} \).
2. Charge: The particle has a charge (although the sign is not specified in the table).

We need to match these characteristics to one of the known subatomic particles—protons, neutrons, and electrons.

### Step-by-Step Analysis:

Step 1: Identifying the Particle by Mass
- Proton: A proton has a mass of approximately \( 1 \, \text{amu} \).
- Neutron: A neutron also has a mass close to \( 1 \, \text{amu} \).
- Electron: An electron has a much smaller mass, approximately \( \frac{1}{2000} \, \text{amu} \).

Given that our particle has a mass of \( \frac{1}{2000} \, \text{amu} \), it matches the mass of an electron.

Step 2: Identifying the Location
To confirm our identification, let’s consider the location:
- Protons and Neutrons: Both protons and neutrons are located inside the nucleus.
- Electrons: Electrons are located outside the nucleus.

Since the particle in question has a mass of \( \frac{1}{2000} \, \text{amu} \) and electrons are the subatomic particles with this characteristic mass, we conclude that:

Final Decision:
- The particle is an electron.
- Electrons are located outside of the nucleus.

Therefore, the table should be completed as:
- Location: "Outside of the nucleus"
- Reason: "because the particle is an electron"

So, to summarize for the table completion:
\begin{tabular}{|l|l|l|}
\hline
Mass (amu) & Location & Charge \\
\hline
[tex]$1 / 2,000$[/tex] & Outside of the nucleus & Has a charge \\
\hline
\end{tabular}

The best explanation among the given options is:
- "Outside of the nucleus," because the particle is an electron