EASY
JEE Main
IMPORTANT
Earn 100
The region in the electromagnetic spectrum where the Balmer series lines appear is:
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Important Questions on Structure of Atom
MEDIUM
JEE Main
IMPORTANT
A stream of electrons from a heat filament was passed between two charge plates kept at a potential difference . If and are charge and mass of an electron, respectively, then the value of (where is wavelength associated with the electron wave) is given by:
MEDIUM
JEE Main
IMPORTANT
The value of magnetic quantum number of the outermost electron of ion is _________ .
(Integer answer)
MEDIUM
JEE Main
IMPORTANT
in its ground state electronic configuration has completely filled orbitals with The value of is __________ .
MEDIUM
JEE Main
IMPORTANT
Consider the hypothetical situation where the azimuthal quantum number, , takes values . Where n is the principal quantum number. Then, the element with atomic number:
EASY
JEE Main
IMPORTANT
Among the following species which option contains all isoelectronic species?
MEDIUM
JEE Main
IMPORTANT
The radius of the second Bohr orbit for hydrogen atom is
(Planck's constant, mass of electron charge of electron permittivity of vacuum, )
MEDIUM
JEE Main
IMPORTANT
If the Thomson model of the atom was correct, then the result of Rutherford's gold foil experiment would have been:
EASY
JEE Main
IMPORTANT
Given below are two statements :
Statement I : Rutherford's gold foil experiment cannot explain the line spectrum of hydrogen atom.
Statement II : Bohr's model of hydrogen atom contradicts Heisenberg's uncertainty principle.
In the light of the above statements, choose the most appropriate answer from the options given below:
