Neutron was discovered by

Options

A. Chadwick
B. Rutherford
C. Bohr
D. Planck

Answer

**Step-by-Step Solution:**

1. **Understanding the Neutron**:
- A neutron is a subatomic particle found in the nucleus of an atom. It is one of the primary components of atomic nuclei, along with protons.

2. **Characteristics of Neutrons**:
- Neutrons have a mass of approximately \(1.6 \times 10^{-27}\) kg.
- They carry no electric charge, which distinguishes them from protons (which are positively charged).

3. **Historical Context**:
- The neutron was discovered in the early 20th century, a significant development in atomic physics.

4. **Discovery of the Neutron**:
- The neutron was discovered by James Chadwick in 1932. His experiments provided evidence for the existence of neutrons, which were previously hypothesized but not observed.

5. **Conclusion**:
- Therefore, the neutron was discovered by James Chadwick.

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