J.J. Thomson's Atomic Model

Energy of an electron in the $2\mathrm{nd}$ orbit of hydrogen atom is $\mathrm{E}$ and the energy of electron in $3\mathrm{rd}$ orbit of $\mathrm{He}$ will be

Which of the following statements is correct in case of Thomson's atomic model?

In the ground state in $...\mathrm{A}...$ electrons are in stable equilibrium while in $...\mathrm{B}...$ electrons always experiences a net force. Here, $\mathrm{A}$ and $\mathrm{B}$ refer to 

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

What are the limitations of Thomson’s Atomic Model?

G.P. Thomson experimentally confirmed the existence of matter waves by the phenomena of

The number of completely filled shells for the element ${\mathrm{ }}_{16}{\mathrm{S}}^{32}$ is

Which of the following properties of atom could be explained correctly by the Thomson Model of atom?

In the experiment for the determination of $\frac{e}{m}$ of electrons by the Thomson method, electric and magnetic fields are

In Thomson's mass spectrographs, when an electric field of $2\times {10}^4 \mathrm{V} {\mathrm{m}}^{-1}$ is applied then the deflection produced on the screen is $20 \mathrm{mm}$. If the length of the plates is $5 \mathrm{cm}$ and the distance of the screen from plates is $21 \mathrm{cm}$ and the velocity of positive ions is ${10}^6 \mathrm{m} {\mathrm{s}}^{-1}$, then their specific charge will be:

In Thomson mass spectrograph, singly and doubly ionised particles from similar parabola corresponding to magnetic fields of 0.8 T and 1.2 T for a constant electric field. The ratio of masses of ionised particles will be