HARD
Chemistry
IMPORTANT
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In an atomic orbital, the sign of Lobes indicates the:

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Important Questions on Structure of Atom

HARD
Chemistry
IMPORTANT
In a photoelectric experiment, kinetic energy of photoelectrons was plotted against the frequency of incident radiation (v), as shown in the figure. Which of the following statements is correct?

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MEDIUM
Chemistry
IMPORTANT
A photon of energy hv is absorbed by a free electron of a metal having work function w<hv. Then:
EASY
Chemistry
IMPORTANT
Which of the following best describes potential energy dependence on inter atomic distance of xenon atoms where of Xenon gasis assumed as Vander wall's gas?
HARD
Chemistry
IMPORTANT
Which of the following statement(s) is/are true?
HARD
Chemistry
IMPORTANT
True statement w.r.t. the Aufbau principle is/are:
HARD
Chemistry
IMPORTANT
Identify the true statement(s):
HARD
Chemistry
IMPORTANT

Consider the following six electronic configurations (remaining inner orbits are completely filled) and mark the correct option.
(I)
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(II)
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(III)
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(IV)
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(V)
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(VI)

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HARD
Chemistry
IMPORTANT
The radius of the orbit of an electron in a Hydrogen like atom is 4.5a0, where a0 is the Bohr radius. Its orbital angular momentum is3h2π. It is given that h is Planck's constant and R is Rydberg constant. The possible wavelength (s), when the atom de excites is/are