Advertisements
Advertisements
प्रश्न
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?
Advertisements
उत्तर
Volume of nucleus = `4/3 π"r"^3`
Volume of atom = `4/3 π"R"^3`
Fraction of volume occupied by the nucleus = `(4/3π"r"^3)/(4/3π"R"^3)`
= `(0.5 xx 10^-15)^3/(5.3 xx 10^-11)^3`
= 8.39
= 8.4 × 10−16
APPEARS IN
संबंधित प्रश्न
Thorium 90Th232 is disintegrated into lead 82Pb200. Find the number of α and β particles emitted in disintegration.
The size of the atom in Thomson’s model is ______ the atomic size in Rutherford’s model.
In the ground state of ______ electrons are in stable equilibrium, while in ______ electrons always experience a net force.
A classical atom based on ______ is doomed to collapse.
An electron in an atom revolves round the nucleus in an orbit of radius r with frequency v. Write the expression for the magnetic moment of the electron.
In Geiger-Marsden experiment, actual results were ______.
In 88 Ra226 nucleus, there are
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°?
An alpha nucleus of energy `1/2`mv2 bombards a heavy nuclear target of charge Ze. Then the distance of closest approach for the alpha nucleus will be proportional to ______.
- v2
- `1/"m"`
- `1/"v"^2`
- `1/"Ze"`
Radius of the 1st orbit of hydrogen atom is r0. What will be the radius of the 4th orbit?
