Advertisements
Advertisements
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.
Advertisements
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.
APPEARS IN
RELATED QUESTIONS
The size of the atom in Thomson’s model is ______ the atomic size in Rutherford’s model.
Write two important limitations of Rutherford's nuclear model of the atom.
In a Geiger-Marsden experiment, calculate the distance of closest approach to the nucleus of Z = 80, when a α-particle of 8Mev energy impinges on it before it comes momentarily to rest and reverses its direction.
How will the distance of closest approach be affected when the kinetic energy of the α-particle is doubles?
In a Geiger-Marsden experiment, calculate the distance of closest approach to the nucleus of Z = 75, when a α-particle of 5 MeV energy impinges on it before it comes momentarily to rest and reverses its direction.
How will the distance of closest approach be affected when the kinetic energy of the α-particle is doubles?
The total energy of an electron in the ground state of the hydrogen atom is -13·6 eV. Its total energy, when a hydrogen atom is in the first excited state, is ______.
The basic force acting on the alpha particles using Coulomb's law is ______.
Which one of the following statements does not hold good when two balls of masses m1 and m2 undergo elastic collision?
Plutonium decays with half of 24000 years. If plutonium is store for 72000 yrs. The fraction of .its that remain:-
The radius of electron's second stationary orbit in Bohr's atom is R. The radius of 3rd orbit will be:-
The ratio of the frequencies of the long wave length its of Lyman Balmer series of hydrogen spectrum is
Which of the following transition in a hydrogen atom emit photon of the highest frequency:
An alpha particle has
The ratio of minimum to maxm wavelength in ballmer series is:-
Draw a graph showing the variation of the number of particles scattered (N) with the scattering angle θ in the Geiger-Marsden experiment. Why only a small fraction of the particles are scattered at θ > 90°?
The electron in a hydrogen atom is typically found at a distance of about 5.3 × 10−11 m from the nucleus which has a diameter of about 1.0 × 10−15 m. Assuming the hydrogen atom to be a sphere of radius 5.3 × 10−11 m, what fraction of its volume is occupied by the nucleus?
According to Bohr model, magnetic field at centre (at the nucleus) of a hydrogen atom due to motion of electron in the ninth orbit is proportional to:
Radius of the 1st orbit of hydrogen atom is r0. What will be the radius of the 4th orbit?
During Rutherford’s gold foil experiment, it was observed that most of the α-particles did not deflect. However, some showed a deflection of 180°.
What hypothesis was made to justify the deflection of α-particle by 180°?
