Structure of th...

In a Bohr's model of an atom when an electron jumps from n=1 to n=3, how much energy will be emitted or absorbed in erg?

Which of the following observations was not correct during Rutherford's scattering experiment?

Which of the following conclusions regarding the structure of the atom is based on Rutherford's $$\alpha$$-particle scattering experiment?

Which of the following properties of atom could be explained correctly by Thomson's model of atom?

Radius of $$2nd$$ shell of $$He^+$$ (where $$a_0$$- Bohr radius)

Atomic radius is of the order of $$10^{-8}\ cm$$ and nuclear radius is of the order of $$10^{-13}\ cm$$. The fraction of atom occupied by nucleus is:

Which of the following conclusions could not be derived from Rutherford's $$\alpha$$-particles scattering experiment?

What is the ratio of time periods $$(\dfrac{T_1}{T_2})$$ in $$2^{nd}$$ orbit of hydrogen atom to third orbit of $$He^+$$ ion?

A single electron orbits a stationary nucleus of charge $$+Z$$, where $$Z$$ is a constant. It requires 47.2 eV to excite electron from second Bohr orbit to third Bohr orbit, find the value of $$Z$$.

The nucleus of the atom $$\left( Z>1 \right) $$ consists of: