1
JEE Advanced 2024 Paper 1 Online
MCQ (More than One Correct Answer)
+4
-2
Change Language

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

A
Uncertainty principle rules out the existence of definite paths for electrons.
B
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.
C
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.
D
According to Bohr's model, the magnitude of velocity of electrons increases with increase in values of $n$.
2
JEE Advanced 2022 Paper 1 Online
MCQ (More than One Correct Answer)
+4
-2
Change Language
For diatomic molecules, the correct statement(s) about the molecular orbitals formed by the overlap of two $2 p_{z}$ orbitals is(are)
A
$\sigma$ orbital has a total of two nodal planes.
B
$\sigma^{*}$ orbital has one node in the $x z$-plane containing the molecular axis.
C
$\pi$ orbital has one node in the plane which is perpendicular to the molecular axis and goes through the center of the molecule.
D
$\pi^{*}$ orbital has one node in the $x y$-plane containing the molecular axis.
3
JEE Advanced 2019 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-1
Change Language
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 $$\psi $$?
A
It is a 4d state
B
The nuclear charge experienced by the electron in this state is less than 2e, where e is the magnitude of the electronic charge
C
It has 2 angular nodes
D
It has 3 radial nodes
4
IIT-JEE 1999
MCQ (More than One Correct Answer)
+3
-0.75
Ground state electronic configuration of nitrogen atom can be represented by
A
IIT-JEE 1999 Chemistry - Structure of Atom Question 50 English Option 1
B
IIT-JEE 1999 Chemistry - Structure of Atom Question 50 English Option 2
C
IIT-JEE 1999 Chemistry - Structure of Atom Question 50 English Option 3
D
IIT-JEE 1999 Chemistry - Structure of Atom Question 50 English Option 4
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