JEE Advanced 2024 Paper 1 Online

MCQ (More than One Correct Answer)

-2

Among the following, the correct statement(s) for electrons in an atom is(are)

Uncertainty principle rules out the existence of definite paths for electrons.

The energy of an electron in $2 s$ orbital of an atom is lower than the energy of an electron that is infinitely far away from the nucleus.

According to Bohr's model, the most negative energy value for an electron is given by $\mathrm{n}=1$, which corresponds to the most stable orbit.

According to Bohr's model, the magnitude of velocity of electrons increases with increase in values of $n$.

JEE Advanced 2022 Paper 1 Online

MCQ (More than One Correct Answer)

-2

For diatomic molecules, the correct statement(s) about the molecular orbitals formed by the overlap of two $2 p_{z}$ orbitals is(are)

$\sigma$ orbital has a total of two nodal planes.

$\sigma^{*}$ orbital has one node in the $x z$-plane containing the molecular axis.

$\pi$ orbital has one node in the plane which is perpendicular to the molecular axis and goes through the center of the molecule.

$\pi^{*}$ orbital has one node in the $x y$-plane containing the molecular axis.

JEE Advanced 2019 Paper 2 Offline

MCQ (More than One Correct Answer)

-1

The ground state energy of hydrogen atom is $$-$$13.6 eV. Consider an electronic state $$\psi $$ of He⁺ whose energy, azimuthal quantum number and magnetic quantum number are $$-$$3.4 eV, 2 and 0, respectively.

Which of the following statement(s) is(are) true for the state $$\psi $$?

It is a 4d state

The nuclear charge experienced by the electron in this state is less than 2e, where e is the magnitude of the electronic charge

It has 2 angular nodes

It has 3 radial nodes

IIT-JEE 1999

MCQ (More than One Correct Answer)

-0.75

Ground state electronic configuration of nitrogen atom can be represented by

IIT-JEE 1999 Chemistry - Structure of Atom Question 50 English Option 1

IIT-JEE 1999 Chemistry - Structure of Atom Question 50 English Option 2

IIT-JEE 1999 Chemistry - Structure of Atom Question 50 English Option 3

IIT-JEE 1999 Chemistry - Structure of Atom Question 50 English Option 4

JEE Advanced Subjects