# Structure of Atom · Chemistry · NEET

Start Practice## MCQ (Single Correct Answer)

NEET 2024

The energy of an electron in the ground state $$\mathrm{(n=1)}$$ for $$\mathrm{He}^{+}$$ ion is $$\mathrm{-x} \mathrm{~J}$$, then that for an electron...

NEET 2024

Match List I with List II.
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NEET 2023 Manipur

Incorrect set of quantum numbers from the following is :

NEET 2023 Manipur

Given below are two statements:
Statement I : The value of wave function, $$\psi $$ depends upon the coordinates of the electron in the atom.
Statemen...

NEET 2023

Select the correct Statements from the following :
A. Atoms of all elements are composed of two fundamental particles.
B. The mass of the electron is ...

NEET 2023

The relation between $$\mathrm{n}_{\mathrm{m}},\left(\mathrm{n}_{\mathrm{m}}=\right.$$ the number of permissible values of magnetic quantum number $$(...

NEET 2022 Phase 2

Match List-I with List-II :
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NEET 2022 Phase 2

When electromagnetic radiation of wavelength 300 nm falls on the surface of a metal, electrons are emitted with the kinetic energy of 1.68 $$\times$$ ...

NEET 2022 Phase 1

Identify the incorrect statement from the following.

NEET 2022 Phase 1

If radius of second Bohr orbit of the He+ ion is 105.8 pm, what is the radius of third Bohr orbit of Li2+ ion?

NEET 2021

A particular station of All India Radio, New Delhi broadcasts on a frequency of 1,368 kHz (kilohertz). The wavelength of the electromagnetic radiation...

NEET 2021

From the following pairs of ions which one is not an iso-electronic pair?

NEET 2019

4d, 5p, 5f and 6p orbitals are arranged in the order of decreasing energy. The correct option is :

NEET 2019

Which of the following series of transitions in the spectrum of hydrogen atom falls in visible region?

NEET 2018

Which one is a wrong statement?

NEET 2017

Which one is the wrong statement ?

NEET 2016 Phase 2

How many electrons can fit in the orbital for which n = 3 and $$l$$ = 1?

NEET 2016 Phase 2

Which of the following pairs of d-orbitals will have electron density along the axes ?

NEET 2016 Phase 1

Two electrons occupying the same orbital are distinguished by

AIPMT 2015

Which is the correct order of increasing energy of the listed orbitals in the atom of titanium ? (At. no. Z = 22)

AIPMT 2015 Cancelled Paper

The number of d-electrons in Fe2+ (Z = 26) is not equal to the number of electrons in which one of the following ?

AIPMT 2015 Cancelled Paper

The angular momentum of electron in 'd' orbital is equal to

AIPMT 2014

What is the maximum number of orbitals that can be identified with the following quantum numbers ?
n = 3, l = 1, m1 = 0

AIPMT 2014

Calculate the energy in joule corresponding to light of wavelength 45 nm. (Planck,s constant, h = 6.63 $$ \times $$ 10$$-$$34 J s, speed of light, c =...

AIPMT 2014

Be2+ is isoelectronic with which of the following ions ?

NEET 2013 (Karnataka)

The outer electronic configuration of Gd (At. No. 64) is

NEET 2013 (Karnataka)

According to law of photochemical equivalence the energy absorbed (in ergs/mole) is given as (h = 6.62 $$ \times $$ 10$$-$$27 ergs, c = 3 $$ \times $$...

NEET 2013

What is the maximum numbers of electrons that can be associated with the following set of quantum numbers ?
n = 3, $$l$$ = 1 and m = $$-$$ 1

NEET 2013

Based on equation E = $$-$$ 2.178 $$ \times $$ 10$$-$$18 J $$\left( {{{{Z^2}} \over {{n^2}}}} \right)$$, certain conclusions are written. Which of the...

NEET 2013

The value of Planck's constant is 6.63 $$ \times $$ 10$$-$$34 J s. The speed of light is 3 $$ \times $$ 1017 mm s$$-$$1. Which value is closest to th...

AIPMT 2012 Mains

The orbital angular momentum of a p-electron is given as

AIPMT 2012 Prelims

Maximum number of electrons in a subshell with $$l$$ = 3 and n = 4 is

AIPMT 2012 Prelims

The correct set of four quantum numbers for the valence electron of rubidium atom (Z = 37) is

AIPMT 2011 Mains

According to the Bohr theory, which of the following transitions in the hydrogen atom will give rise to the least energetic photon ?

AIPMT 2011 Prelims

The total number of atomic orbitals in fourth energy level of an atom is

AIPMT 2011 Prelims

The energies E1 and E2 of two radiations are 25 eV and 50 eV respectively. The relation between their wavelengths i.e., $$\lambda $$1 and $$\lambda $$...

AIPMT 2011 Prelims

If n = 6, the correct sequence for filling of electrons will be

AIPMT 2010 Mains

A 0.66 kg ball is moving with a speed of 100 m/s. The associated wavelength will be
(h = 6.6 $$ \times $$ 10$$-$$34 J s)

AIPMT 2009

Maximum number of electrons in a subshell of an atom is determined by the following

AIPMT 2009

Which of the following is not permissible arrangement of electrons in an atom ?

AIPMT 2008

The measurement of the electron position is associated with an uncertainty in momentum, which is equal to 1 $$ \times $$ 10$$-$$18 g cm s$$-$$1. The u...

AIPMT 2008

If uncertainty in position and momentum are equal, then uncertainty in velocity is

AIPMT 2007

Consider the following sets of quantum numbers :
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AIPMT 2006

The orientation of an atomic orbital is governed by

AIPMT 2006

Given : The mass of electron is 9.11 $$ \times $$ 10$$-$$31 kg, Planck constant is 6.626 $$ \times $$ 10$$-$$34 J s, the uncertainty involved in the m...

AIPMT 2005

The energy of second Bohr orbit of the hydrogen atom is $$-$$328 kJ mol$$-$$1; hence the energy of fourth Bohr orbit would be

AIPMT 2004

The frequency of radiation emitted when the electron falls from n = 4 to n = 1 in hydrogen atom will be (Given ionization energy of H = 2.18 $$ \times...

AIPMT 2003

The velocity of Planck's constant is 6.63 $$ \times $$ 10$$-$$34 J s.
The velocity of light is 3.0 $$ \times $$ 108 m s$$-$$1. Which value is closes...

AIPMT 2002

In hydrogen atom, energy of first excited state is $$-$$ 3.4 eV. Then find out K.E. of same orbit of hydrogen atom

AIPMT 2001

Main axis of a diatomic molecule is z, molecular orbital px and py overlap to from which of the following orbitals.

AIPMT 2001

The following quantum numbers are possible for how many orbitals :
n = 3, $$l$$ = 2, m = +2 ?

AIPMT 2000

For given energy, E = 3.03 $$ \times $$ 10$$-$$19 Joules corresponding wavelength is (h = 6.626 $$ \times $$ 10$$-$$34 J sec, c = 3 $$ \times $$ 108 ...

AIPMT 2000

Isoelectronic species are