What is nuclear energy? State the mass of electrons, protons and neutrons in terms of MeV. ? [2 MARKS]

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Solution

Definition: 1 Marks
Mass: 1 Marks

The total energy released during a nuclear reaction is known as nuclear energy.
Mass of electron = 0.511 MeV
Mass of proton = 938.3 MeV
Mass of neutron = 939 MeV

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Similar questions

Q. If both the number of protons and the number of neutrons are conserved in each nuclear reaction in what way is mass converted into energy (or vice-versa) in a nuclear reaction?

Q. Write the relation for binding energy (B.E) (in MeV) of a nucleus of mass

_{Z}^{A} M

, atomic number (Z) and mass number (A) in terms of the masses of its constituents - neutrons and protons.

Q. Nuclear binding energy is the energy released during the hypothetical formation of the nucleus by the condensation of individual nucleons. Thus, binding energy per nucleon =

\frac{Total binding energy}{Number of nucleons}

For example, the mass of hydrogen atom is equal to the sum of the masses of a proton and an electron. For other atoms, the atomic mass is less than the sum of the masses of protons, neutrons and electrons present. This difference in mass, termed as mass defect, is a measure of the binding energy of protons and neutrons in the nucleus. The mass-energy relationship postulated by Einstein is expressed as:

Δ E = Δ m c^{2}

Where

Δ E

is the energy liberated,

Δ m

is the loss of mass, and c is the speed of light.
In the reaction

_{1}^{2} H +_{1}^{3} H \to_{2}^{4} H e +_{0}^{1} n

, if binding energies

_{1}^{2} H,_{1}^{3} H and_{2}^{4} H e

are respectively a, b and c (in MeV), then the energy released in this reaction is:

Q. A neutron breaks into a proton and an electron. Calculate the energy produced in this reaction is MeV. Mass of an electron

= 9 \times 10^{- 31} k g

, mass of proton

= 1.6725 \times 10^{- 27} k g

, mass of neutron

= 1.6747 \times 10^{- 27} k g

, and speed of light

= 3 \times 10^{8} m s^{- 1}

The masses of neutron and proton are 1.0087 amu and 1.0073 amu respectively. If the neutrons and protons combine to form a helium nucleus (alpha particles) of mass 4.0015 amu, the binding energy of the helium nucleus will be [1 amu= 931 MeV]

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What is nuclear energy? State the mass of electrons, protons and neutrons in terms of MeV. ? [2 MARKS]

Definition: 1 Marks Mass: 1 Marks The total energy released during a nuclear reaction is known as nuclear energy. Mass of electron = 0.511 MeV Mass of proton = 938.3 MeV Mass of neutron = 939 MeV

Definition: 1 Marks
Mass: 1 Marks

The total energy released during a nuclear reaction is known as nuclear energy.
Mass of electron = 0.511 MeV
Mass of proton = 938.3 MeV
Mass of neutron = 939 MeV