List of top Physics Questions on atom structure models asked in MET

The wave number of the shortest wavelength of absorption spectrum of hydrogen atom is_ _ _ _
(Rydberg constant = \(109700\,\mathrm{cm^{-1}}\)).

Ionisation potential of hydrogen atom is \(13.6 \, \text{eV}\). Hydrogen atoms in the ground state are excited by monochromatic radiation of photon energy \(12.1 \, \text{eV}\). The spectral lines emitted by hydrogen atoms according to Bohr's theory will be:

If the work function of a metal is 6.875 eV, its threshold wavelength will be (Take \(c = 3 \times 10^8\) m/s)

The velocity of an electron in the second orbit of sodium atom (atomic number = 11) is \( v \). The velocity of an electron in its fifth orbit will be:

Arrange the following in the increasing order of their basic strengths: $CH_{3}NH_{2}$, $(CH_{3})_{2}NH$, $(CH_{3})_{3}N$ and $NH_{3}$

If an electron drops from $n=4$ to $n=2$ in a hydrogen atom, the series of spectral lines observed is: