Related Questions:
Saturday, July 3, 2021
Calculate the energy per mole of photon of electromagnetic radiations of wavelength 4000Å.
Related Questions:
(1) On the basis of Heisenbergs uncertainty principle,
show that the electron cannot exist within the nucleus.
(2) Atomic radius is the order of 10^-8 cm. and nuclear
radius is the order of 10^--13 cm. Calculate what fraction of atom is occupied
by nucleus
(3) Electromagnetic radiations of wavelength 242 nm is
just sufficient to ionise sodium atom. Calculate the ionisation energy of
sodium in kJ mol^-1.
(4) The shortest wave length in H spectrum of Lymen
series when Rh = 109678 cm^1 is
(5) An electron beam can undergo diffraction by crystals.
Through what potential should a beam of electrons be accelerated so that its
wavelength becomes equal to 1.54 A
(6) The mass charge ratio for A+ ion is 1.97x10^-7 kg
C^-1. Calculate the mass of A atom.
(7) AIR service on Vividh Bharati is transmitted on 219 m
band. What is its transmission frequency in Hertz?
(8) Calculate the number of photon emitted in 10 hours by
a 60 W sodium lamp (lemda or photon = 5893 A")
(9) Calculate the longest wavelength which can remove the
electron from first Bohrs orbit. Given E1 = 13.6 eV .
(10) Calculate momentum of radiations of wavelength 0.33
nm.
The quantum theory assumes that energy changes are not continuous. Why do not we notice this effect in our everyday activities?
In everyday activities, we deal with macroscopic particles such as our bodies, or cars which gains and loss total amount of energy much larger than a quantum. The gain and loss of the relatively miniscule quantum of energy is unnoticed.
Related Questions:
What is the difference between 2p and 3p orbitals?
Why are 2p orbitals higher in energy than 2s?
Does 2s and 2p have the same energy?
Calculate radial and angular node for 2p-orbitals.
What are the difference between "Nodal surface" and "Nodal plane"?
What are Zeeman and Stark effects? Were they
explained by the Bohr’s theory?
Which of the Hydrogen spectrum series found in
visible range of spectrum?
What are difference between "Isoelectronic"
and "Isosters" species?
What are the difference between "Kernel" and
"Core" ?
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