The nucleus of an atom is composed of:
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The nucleus contains protons and neutrons.
The atomic number of an element is equal to the number of:
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Atomic number Z represents the number of protons.
Isotopes are atoms of the same element having the same:
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Isotopes have the same number of protons but different numbers of neutrons.
The number of neutrons in a nucleus is given by:
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Neutron number N = mass number A − atomic number Z.
The mass number of an atom is equal to the total number of:
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The energy required to separate a nucleus completely into its individual nucleons is called:
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Nuclear binding energy measures how strongly nucleons are bound.
Which radiation has the greatest penetrating power among alpha, beta and gamma radiation?
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Gamma rays are highly penetrating electromagnetic radiation.
The nuclear force is generally:
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Nuclear forces are strong but act over very short distances.
The charge on a neutron is:
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A neutron is electrically neutral.
The half-life of a radioactive substance is the time required for:
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After one half-life, half of the original radioactive nuclei remain.
The relation between mass defect and binding energy is:
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Einstein's mass-energy relation gives the nuclear binding energy.
Gamma radiation consists of:
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Gamma rays are high-energy electromagnetic radiation.
A beta-minus particle is:
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Beta-minus decay emits an electron from the nucleus.
The SI unit of nuclear energy is:
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The joule is the SI unit of energy.
The force that holds protons and neutrons together inside the nucleus is called:
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The strong nuclear interaction binds nucleons together.
An alpha particle is identical to the nucleus of a:
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An alpha particle contains two protons and two neutrons.
The charge on a proton is:
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A proton carries one positive elementary charge.
Nuclear fusion is the process in which:
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Fusion combines light nuclei and can release large amounts of energy.
The difference between the mass of separated nucleons and the actual nuclear mass is called:
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Mass defect is converted into binding energy through E = mc².
The mass of a stable nucleus is:
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The mass defect corresponds to nuclear binding energy.
