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Question
O2 molecule consists of two oxygen atoms. In the molecule, nuclear force between the nuclei of the two atoms ______.
Options
is not important because nuclear forces are short-ranged.
is as important as electrostatic force for binding the two atoms.
cancels the repulsive electrostatic force between the nuclei.
is not important because oxygen nucleus have equal number of neutrons and protons.
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Solution
O2 molecule consists of two oxygen atoms. In the molecule, nuclear force between the nuclei of the two atoms is not important because nuclear forces are short-ranged.
Explanation:
Forces that keep the nucleons bound in the nucleus are called nuclear forces.
- Nuclear forces are short-range forces. These do not exist at large distances greater than 10 ~ 15 m.
- Nuclear forces are the strongest forces in nature.
- These are attractive force and causes the stability of the nucleus.
- These forces are charge-independent.
- Nuclear forces arc non-central force.
The nuclear binding force has to dominate over the Coulomb repulsive force between protons inside the nucleus. The nuclear force between two nucleons falls rapidly to zero as their distance is more than a few femtometres.
In O2 molecule which consists of two oxygen atoms molecules, nuclear force between the nuclei of the two atoms is not important because nuclear forces are short-ranged and act inside the nucleus only.
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