
Structure of an atom
Authored by Madhurpreet Kaur
Computers, Chemistry
11th Grade
Used 8+ times

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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is responsible to rule out the existence of definite paths or trajectories of electrons?
Pauli’s exclusion principle.
Heisenberg’s uncertainty principle.
Hund’s rule of maximum multiplicity.
Aufbau principle.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following statements does not form a part of Bohr's model of hydrogen atom?
Energy of the electrons in the orbit is quantised
The electron in the orbit nearest the nucleus has the lowest energy
Electrons revolve in different orbits around the nucleus
The position and velocity of the electrons in the orbit cannot be determined simultaneously
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Balmer series appear in the
IR region
X-Ray region
Visible region
UV region
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The spectra which is also known as the line spectra is
Spectrosocopy
absorption spectra
emission spectra
continuous spectra
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Millikan's oil drop experiment determined the
Mass of proton
Presence of neutron
Charge of electron
Size of electron
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Wave number is defined as
the number of wavelengths per unit length
the number of frequencies per unit length
reciprocal of wavelength
all of the above
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is not a postulate of Bohr's model
The electron in the hydrogen atom can move around the nucleus in a circular path of fixed radius and energy.
The angular momentum of an electron is quantised.
The energy of an electron in the orbit does not change with time.
The energy change takes place in a continuous manner
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