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प्रश्न
A molecule of hydrogen contains two protons and two electrons. The nuclear force between these two protons is always neglected while discussing the behaviour of a hydrogen molecule. Why?
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उत्तर
Inside the nucleus, two protons exert nuclear force on each other. These forces are short-ranged (a few fm), strong and attractive forces. They also exert electrostatic repulsive force (long-ranged). While discussing the behaviour of a hydrogen molecule, the nuclear force between the two protons is always neglected. This is because the separation between the two protons in the molecule is ∼ 70 pm which is much greater than the range of the nuclear force.
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संबंधित प्रश्न
Answer the following question.
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The radius of inner most orbit of hydrogen atom is 5.3 × 10-11 m. What is the radius of third allowed orbit of hydrogen atom?
The stable nucleus that has a radius half that of Fe56 is:
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The Q value of a nuclear reaction A + b → C + d is defined by Q = [mA + mb − mC − md]c² where the masses refer to the respective nuclei. Calculate the Q-value of the reaction and state whether this reaction is exothermic or endothermic.
\[_1^1\mathrm{H}+_1^3\mathrm{H}\rightarrow_1^2\mathrm{H}+_1^2\mathrm{H}\]
Atomic masses are given to be
\[\mathrm{m(}_{1}^{1}\mathrm{H)}=1.007825\mathrm{u}\]
\[\mathrm{m(}_{1}^{2}\mathrm{H)}=2.014102\mathrm{u}\]
\[\mathrm{m(}_{1}^{3}\mathrm{H})=3.016049\mathrm{u}\]
Assertion (A): All nuclei are not of the same size.
Reason (R): The size of the nucleus depends on atomic mass.
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Which relation gives the experimentally observed dependence of the nuclear radius \[R\] on the mass number \[A\]?
The value of the radius constant \[R_0\] used in the nuclear radius formula is approximately:
The minimum distance reached by an alpha particle approaching a positively charged nucleus before being turned back is called the:
Which experiments provide more accurate measurements of nuclear size and help determine the distribution of charge inside the nucleus?
Since the nucleus is approximately spherical with \[R = R_0 A^{1/3}\], its volume \[V = \frac{4}{3}\pi R^3\] is proportional to:
The approximate density of nuclear matter is:
