JEE Main 2021 (Online) 25th February Morning Slot | Structure of Atom Question 70 | Chemistry

JEE Main 2021 (Online) 25th February Morning Slot

MCQ (Single Correct Answer)

-1

The plots of radial distribution functions for various orbitals of hydrogen atom against 'r' are given below :

JEE Main 2021 (Online) 25th February Morning Slot Chemistry - Structure of Atom Question 70 English

JEE Main 2021 (Online) 25th February Morning Slot Chemistry - Structure of Atom Question 70 English

The correct plot for 3s orbital is :

(B)

(A)

(C)

(D)

JEE Main 2021 (Online) 25th February Morning Slot

MCQ (Single Correct Answer)

-1

In which of the following pairs, the outer most electronic configuration will be the same?

Cr⁺ and Mn²⁺

Ni²⁺ and Cu⁺

V²⁺ and Cr⁺

Fe²⁺ and Co⁺

JEE Main 2021 (Online) 24th February Evening Slot

MCQ (Single Correct Answer)

-1

According to Bohr's atomic theory :

(A) Kinetic energy of electron is $$ \propto {{{Z^2}} \over {{n^2}}}$$.

(B) The product of velocity (v) of electron and principal quantum number (n), $$'vn' \propto {Z^2}$$.

(C) Frequency of revolution of electron in an orbit is $$ \propto {{{Z^3}} \over {{n^3}}}$$.

(D) Coulombic force of attraction on the electron is $$ \propto {{{Z^3}} \over {{n^4}}}$$.

Choose the most appropriate answer from the options given below :

(A), (C) and (D) only

(A) only

(A) and (D) only

JEE Main 2020 (Online) 5th September Evening Slot

MCQ (Single Correct Answer)

-1

The correct statement about probability density (except at infinite distance from nucleus) is :

It can be zero for 1s orbital

It can be zero for 3p orbital

It can never be zero for 2s orbital

It can negative for 2p orbital

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