Structure of Atom

Who proposed the 'Plum Pudding Model' of the atom?

Which of the following is NOT a postulate of Dalton's atomic theory?

In the Bohr model, the energy of an electron in the nth orbit of hydrogen atom is given by:

Which quantum number determines the shape of an atomic orbital?

The maximum number of electrons that can be accommodated in the third shell (n=3) is:

Rutherford's gold foil experiment led to the discovery of:

Which of the following statements about isotopes is TRUE?

Calculate the wavelength of an electron accelerated through a potential difference of 150 V. (Given: h = 6.626×10^-34 Js, m = 9.11×10^-31 kg, e = 1.6×10^-19 C)

The magnetic quantum number (m_l) for an electron in the p-orbital can have how many possible values?

Which of the following correctly represents the order of increasing penetration power of orbitals?