HARD
12th ICSE
IMPORTANT
Earn 100

The wavelength of the first spectral line of sodium atom is 5896A0. What is the first excitation potential of the sodium atom?

Important Questions on Atom, Origin of Spectra : Bohr's Theory of Hydrogen Atom

HARD
12th ICSE
IMPORTANT
The first excitation potential of mercury is 4.86V. A mercury atom, after absorbing a photon, reaches its first excited state. Find the wavelength of the absorbed photon.
HARD
12th ICSE
IMPORTANT
The first and second excitation potentials of hydrogen atom are respectively 10.2V and 12.09V. Draw, on this basis, the energy-level diagram of the atom and show all possible emission transitions in it and mark their corresponding wavelengths.
HARD
12th ICSE
IMPORTANT
The ionization potential of hydrogen atom is 13.6V. In the lowest energy-level, this atom is ionized by absorbing wavelength 800A0. What will be the kinetic energy of the released electron?
HARD
12th ICSE
IMPORTANT
Calculate the wavelength of the first line of the Balmer series of hydrogen. Indicate the transition on an energy-level diagram. What is this line called?
MEDIUM
12th ICSE
IMPORTANT
Calculate the wavelength of the first line of the Balmer series of hydrogen. Indicate the transition on an energy-level diagram. What is this line called? Does it lie in the visible region of the electro-magnetic spectrum?
MEDIUM
12th ICSE
IMPORTANT
Calculate the wavelengths of the third and fifth spectral lines of Paschen series in hydrogen spectrum when E=-2.18×10-18n2 joule.
MEDIUM
12th ICSE
IMPORTANT
Calculate the wavelength of the first lines of Balmer, Lyman and Paschen series.
MEDIUM
12th ICSE
IMPORTANT
The wavelength of the first line of the Lyman series is λ. What will be the wavelength of the first line of the Balmer series in terms of λ?