Rutherford’s experiment on scattering of $\alpha -\backslash alpha-$particles showed for the first time that the atom has

The increasing order [lowest first] for the values of e/m [charge / mass] for electron [e], proton [p], neutron [n] and alpha particles [$\alpha \backslash alpha$] is

Bohr’s model can explain

Rutherford’s alpha particle scattering experiment eventually led to the conclusion that

The wavelength of the electron emitted, when in a hydrogen atom, electron falls from infinity to stationary state 1, would be [Rydberg’s constant $=1.097\times 10^7{m}^{-1}=\; 1.097\backslash times\; 10^7\backslash ,m^\{-1\}$]

The shortest wavelength in hydrogen spectrum of Lyman series, when $R_H=109678R\_H\; =\; 109678$ cm${}^{-1}^\{-1\}$ is

The wave number of the spectral line in the emission spectrum of hydrogen will be equal to 8 / 9 times the Rydberg’s constant if the electron jumps from

Those species are called isotones which have same

Calculate the wavelength of the light required to break the bond between two chlorine atoms in a chlorine molecule. The Cl - Cl bond energy is 243 kJ mol${}^{-1}^\{-1\}$

A 600 W mercury lamp emits monochromatic radiation of wavelength $3.315\times 10^{-7}3.315\; \backslash times\; 10^\{-7\}$ m. How many photons are emitted from the lamp per second?