Cbse answer for if the nucleons bound in a nucleus are separated the sum of the mass is greater than the sum of the mass of the nuclear. where does this mass difference come from?
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The protons and neutrons are held together by the strong attractive forces inside the nucleus. These forces are called as nuclear forces.These forces, which act between the nucleons, are mainly responsible for the stability of the nucleus. Various characteristics of nuclear forces are given below:
(a) Nuclear forces are attractive in nature:- The magnitude which depends upon inter nucleon distance is of very high order.
(b) Nuclear forces are charge independent:- Nature of force remains the same whether we consider force between two protons, between two neutrons or between a proton and a neutron.
(c) These are short range forces:- Nuclear forces operate between two nucleons situated in close neighborhood only.
(d) Nuclear forces decrease very quickly with distance between two nucleons:- Their rate of decrease is much rapid than that of inverse square law forces. The forces become negligible when the nucleons are more than 10-12 cm apart.
(v) Nuclear forces are spin dependent:- Nucleons having parallel spin are more strongly bound to each other than those having anti-parallel spin.
Interaction of Charges
The Strong Nuclear Force (also referred to as the strong force) is one of the four basic forces in nature (the others being gravity, the electromagnetic force, and the weak nuclear force). As its name implies, it is the strongest of the four. However, it also has the shortest range, meaning that particles must be extremely close before its effects are felt. Its main job is to hold together the subatomic particles of the nucleus (protons, which carry a positive charge, and neutrons, which carry no charge. These particles are collectively called nucleons). As most people learn in their science education, like charges repel (+ +, or - -), and unlike charges attract (+ -).
Electrostatic Repulsion Due to Charges of NucleonsIf you consider that the nucleus of all atoms except hydrogen contain more than one proton, and each proton carries a positive charge, then why would the nuclei of these atoms stay together? The protons must feel a repulsive force from the other neighboring protons. This is where the strong nuclear force comes in. The strong nuclear force is created between nucleons by the exchange of particles called mesons. As long as this meson exchange can happen, the strong force is able to hold the participating nucleons together.
(a) Nuclear forces are attractive in nature:- The magnitude which depends upon inter nucleon distance is of very high order.
(b) Nuclear forces are charge independent:- Nature of force remains the same whether we consider force between two protons, between two neutrons or between a proton and a neutron.
(c) These are short range forces:- Nuclear forces operate between two nucleons situated in close neighborhood only.
(d) Nuclear forces decrease very quickly with distance between two nucleons:- Their rate of decrease is much rapid than that of inverse square law forces. The forces become negligible when the nucleons are more than 10-12 cm apart.
(v) Nuclear forces are spin dependent:- Nucleons having parallel spin are more strongly bound to each other than those having anti-parallel spin.
Interaction of Charges
The Strong Nuclear Force (also referred to as the strong force) is one of the four basic forces in nature (the others being gravity, the electromagnetic force, and the weak nuclear force). As its name implies, it is the strongest of the four. However, it also has the shortest range, meaning that particles must be extremely close before its effects are felt. Its main job is to hold together the subatomic particles of the nucleus (protons, which carry a positive charge, and neutrons, which carry no charge. These particles are collectively called nucleons). As most people learn in their science education, like charges repel (+ +, or - -), and unlike charges attract (+ -).
Electrostatic Repulsion Due to Charges of NucleonsIf you consider that the nucleus of all atoms except hydrogen contain more than one proton, and each proton carries a positive charge, then why would the nuclei of these atoms stay together? The protons must feel a repulsive force from the other neighboring protons. This is where the strong nuclear force comes in. The strong nuclear force is created between nucleons by the exchange of particles called mesons. As long as this meson exchange can happen, the strong force is able to hold the participating nucleons together.
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