(A) Quantum mechanics is a fundamental theory in physics and chemistry that describes the physical properties of nature at the scale of atoms and suba

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$A$ branch of science that deals with the motion of microscopic particles.

(A) Quantum mechanics is a fundamental theory in physics and chemistry that describes the physical properties of nature at the scale of atoms and subatomic particles. It provides a mathematical framework to understand the behavior of microscopic entities like electrons,protons,and neutrons,which do not follow classical mechanics. Key principles include wave-particle duality and the uncertainty principle.

Class 11 Chemistry Structure of Atom Uncertainty principle and Schrodinger wave equation

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What is Quantum mechanics?

A
$A$ branch of science that deals with the motion of microscopic particles.
B
$A$ branch of science that deals with the motion of macroscopic objects.
C
$A$ branch of science that deals with the study of chemical reactions.
D
$A$ branch of science that deals with the study of thermodynamics.

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Class 11 Questions

Class 11

Chemistry Questions

Chapter

Structure of Atom

Subtopic

Uncertainty principle and Schrodinger wave equation

Assertion $(A)$: The probability of finding an electron in a small volume around a point $(x, y, z)$ at a distance $r$ from the nucleus is proportional to $\psi^2$.
Reason $(R)$: Subatomic particles possess both particle and wave nature.

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The effect of the uncertainty principle is significant only for the motion of microscopic particles and is negligible for macroscopic particles. Justify the statement with the help of a suitable example.

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The Bohr model of an atom is contradicted by

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If the position of the electron is measured within an accuracy of $\pm 0.002 \,nm$,calculate the uncertainty in the momentum of the electron. Suppose the momentum of the electron is $\frac{h}{4 \pi \times 0.05 \,nm}$,is there any problem in defining this value?

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Which of the following statements regarding $\Psi$ is incorrect?

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What is Quantum mechanics?

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Assertion $(A)$: The probability of finding an electron in a small volume around a point $(x, y, z)$ at a distance $r$ from the nucleus is proportional to $\psi^2$.Reason $(R)$: Subatomic particles possess both particle and wave nature.

The effect of the uncertainty principle is significant only for the motion of microscopic particles and is negligible for macroscopic particles. Justify the statement with the help of a suitable example.

The Bohr model of an atom is contradicted by

If the position of the electron is measured within an accuracy of $\pm 0.002 \,nm$,calculate the uncertainty in the momentum of the electron. Suppose the momentum of the electron is $\frac{h}{4 \pi \times 0.05 \,nm}$,is there any problem in defining this value?

Which of the following statements regarding $\Psi$ is incorrect?

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Assertion $(A)$: The probability of finding an electron in a small volume around a point $(x, y, z)$ at a distance $r$ from the nucleus is proportional to $\psi^2$.
Reason $(R)$: Subatomic particles possess both particle and wave nature.