MEDIUM
JEE Main
IMPORTANT
Earn 100

The ratio of ionisation energy of Bohr's Hydrogen atom and Bohr's Hydrogen-like Lithium atom is,
(a)
(b)
(c)
(d)none of these.

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Important Questions on Atomic Physics
MEDIUM
JEE Main
IMPORTANT
What is the angular momentum of an electron in Bohr's hydrogen atom, whose energy is ?

MEDIUM
JEE Main
IMPORTANT
The ratio between total acceleration of the electron in a singly ionized helium atom and hydrogen atom (both in ground state) is

MEDIUM
JEE Main
IMPORTANT
A hydrogen atom in its ground state absorbs energy. The orbital angular momentum is increased by

HARD
JEE Main
IMPORTANT
The ratio of the speed of the electrons in the ground state of hydrogen to the speed of light in vacuum is

MEDIUM
JEE Main
IMPORTANT
Minimum excitation potential of Bohr's first orbit in hydrogen atom is

HARD
JEE Main
IMPORTANT
Which of the following statements are true regarding Bohr's model of hydrogen atom?
Orbiting speed of electron decreases as it shifts to discrete orbits away from the nucleus.
Radii of allowed orbits of electron are proportional to the principal quantum number.
Frequency with which electrons orbit around the nucleus in discrete orbits is inversely proportional to the cube of principal quantum number.
Binding force with which the electron is bound to the nucleus increases as it shifts to outer orbits.
Select the correct answer using the codes given below

HARD
JEE Main
IMPORTANT
The de-Broglie wavelength of an electron in the first Bohr orbit is

HARD
JEE Main
IMPORTANT
In a hypothetical Bohr hydrogen, the mass of the electron is doubled. The energy, and the radius, of the first orbit, will be? ( is the Bohr radius)
