List of top Chemistry Questions on Quantum Mechanical Model of Atom asked in AP EAPCET

Consider the following two statements Statement--I: The order of energies of \(2s\)-orbitals of H, Li and Na is \[ E_{2s}(\mathrm{H})<E_{2s}(\mathrm{Li})<E_{2s}(\mathrm{Na}) \] Statement--II: The photoelectric effect explains the wave nature of light. The correct answer is

Which of the following quantum numbers determines the shape of an orbital?

The wavelength of electron in the first orbit of hydrogen atom is \[ 3.3\times10^{-10}\,\text{m}. \] The kinetic energy of electron (in J) is:
\[ (h=6.6\times10^{-34}\,\text{Js},\ m_e=9.0\times10^{-31}\,\text{kg}) \]