Subatomic Particle Properties Explained
Understanding the properties of subatomic particles is fundamental in science. The question requires identifying a particle with specific characteristics: a negative charge and essentially zero or negligible mass.
Let's review the properties of the primary subatomic particles:
- Protons: Located in the atom's nucleus. They possess a positive charge (+1) and have a significant mass (approximately 1 atomic mass unit, amu).
- Neutrons: Also located in the nucleus. They have no electrical charge (neutral) and possess a mass very close to that of a proton (approximately 1 amu).
- Electrons: Orbit the nucleus in specific energy levels. They carry a negative charge (-1). Their mass is extremely small, about 1/1836th of the mass of a proton, making it negligible in many calculations.
A comparison highlights the differences:
| Particle | Charge | Relative Mass |
|---|---|---|
| Proton | Positive (+1) | Significant (≈ 1 amu) |
| Neutron | Neutral (0) | Significant (≈ 1 amu) |
| Electron | Negative (-1) | Negligible (≈ 1/1836 amu) |
Based on these properties, the subatomic particle matching the description of having a negative charge and negligible mass is the electron.
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