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11th CBSE
IMPORTANT
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Which of the following has largest de-Broglie wavelength, provided all have equal velocity?

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Important Questions on Structure of Atom

MEDIUM
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>TEST YOUR GRIP>Q 17
Which of the following relates to photons both as wave motion and as a stream of particles?
HARD
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>TEST YOUR GRIP>Q 18
The de Broglie wavelength of a ball of mass 10 g moving with a velocity of 10 ms-1 is h=6.626×10-34 Js
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11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>TEST YOUR GRIP>Q 19
The position of both, an electron and a helium atom, is known within 1.0 nm. Further, the momentum of the electron is known within 5.0×10-26 kgms-1. The minimum uncertainty in the measurement of momentum of helium atom is
HARD
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>TEST YOUR GRIP>Q 20
Given: The mass of electron is 9.11×10-31kg, Planck constant is 6.626×10-34 Js, the uncertainty involved in the measurement of velocity within a distance of 0.1Å is
HARD
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>TEST YOUR GRIP>Q 21
The number of nodal planes a 5dxy orbital has, is/are
MEDIUM
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>TEST YOUR GRIP>Q 22
Principal, Azimuthal and magnetic quantum numbers are respectively related to
MEDIUM
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>TEST YOUR GRIP>Q 23
The number of 2p electrons having spin quantum number s=-12 are
MEDIUM
11th CBSE
IMPORTANT
Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>TEST YOUR GRIP>Q 24
The angular momentum of an electron is zero. In which orbital may it be present?