A neutron is a chargeless subatomic particle that is a part of each atomic nucleus except for ordinary hydrogen. It does not possess an electric charge and has a rest mass equivalent to 1.67492749804 × 10−27 kg. It is marginally greater than the mass of a proton, but 1,838.68 times larger than that of an electron. A neutron can be generated in numerous ways and can be represented as an important source of indirectly ionising radiation. Usually, neutrons are categorised based on their energy. A thermal neutron is a type that is in thermal equilibrium with other matter and, in exceptional cases, has Maxwellian velocity distribution. Here, the most likely velocity at 295 K is around 2200 m/sec, relative to an energy level of 0.025 eV.
Neutrons in the energy level 0.5 keV – 10 keV are known as intermediate neutrons. Such neutrons may also be called epithermal or resonance neutrons. A fast neutron is a type of neutron which is in the energy level of 10 keV to 10 MeV. In such an energy range, a neutron interacts with other matter by elastic collisions. Neutrons that possess energies greater than 10 MeV are known as relativistic neutrons. A neutron is made of one up quark and two down quark and is under the category of fermions. It is represented by the symbol n or nº. The neutron’s mass is marginally greater than the proton’s mass. The charge of a neutron is null, which means that the neutron is always electrically neutral. The normal location of neutrons is inside the nucleus.
Neutron Mass Questions and Answers
1) What is a neutron?
A neutron is a neutral subatomic particle that is a part of each atomic nucleus except for normal hydrogen. It does not possess an electric charge.
2) What is the mass of a neutron in kilograms?
The mass of a neutron is 1.67492749804 × 10−27 kg,
3) What is the mass of a neutron in grams?
The mass of a neutron is 1.67492749804 × 10−24 kg.
4) What is the mass of a neutron in amu?
The mass of a neutron is 1.008665 amu.
5) What is the mass of a neutron in MeV?
The mass of a neutron is 939.565 420 52 MeV.
6) The mass of the neutron is marginally _____ than the proton’s mass.
Answer: greater
Explanation: The mass of the neutron is marginally greater than the proton’s mass.
7) What are neutrons made of?
A neutron is made of one up quark and two down quark and is under the category of fermions. It is represented by the symbol n or nº.
8) What are the different types of neutrons?
Thermal neutrons, resonance neutrons, and fast neutrons are the main types of neutrons (based on energy levels). A thermal neutron is a type that is in thermal equilibrium with other matter and, in exceptional cases, has Maxwellian velocity distribution. Here, the most likely velocity at 295 K is around 2200 m/sec, relative to an energy level of 0.025 eV. Neutrons in the energy level 0.5 keV – 10 keV are known as intermediate neutrons. A fast neutron is a type of neutron which is in the energy level of 10 keV to 10 MeV.
9) The neutron’s mass is marginally _____ than the proton’s mass.
Answer: greater
Explanation: The neutron’s mass is marginally greater than the proton’s mass.
10) The charge of a neutron is null, which means that the neutron is always ______ neutral.
Answer: electrically
Explanation: The charge of a neutron is null, which means that the neutron is always electrically neutral.
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Practice Questions
1) What are the main components of an atomic nucleus?
2) What is the mass of a proton?
3) What is the mass of an electron?
4) What is the charge of a neutron?
5) What is the mass difference between a neutron and a proton?
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