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Standard IX

Chemistry

Mole Concept & Avogadro Number

The diagrams ...

Question

The diagrams represent the potential energy $U$ of a function of the inter-atomic distance $r$ . Which diagram corresponds to stable molecules found in nature

Diagram

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Diagram

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Diagram

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Solution

The correct option is D Diagram
When the distance between atoms is large, then interatomic force is very weak. When they come closer, force of attraction increases and at a particular distance force becomes zero. When they are further brought closer force becomes repulsive in nature. This can be explained by slope of $U - x$ curve shown in graph $(a)$ .

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Similar questions

Q. The diagrams represents the potential energy

U

as a function of the inter-atomic distance

r

. Which diagram corresponds to stable molecules found in nature?

Q. The potential energy

U

between two atoms in a diatomic molecules as a function of the distance

x

between atoms has been shown in the figure. The atoms are:

Q. The potential energy as a function of the force between two atoms in a diatomic molecules is given by

U (x) = \frac{A}{x^{12}} - \frac{B}{x^{6}}

, where

A

and

B

are positive constants and x-refers to the distance between atoms. The position of stable equilibrium for the system of the two atoms is given as:

Q. The potential energy function for the force between two atoms in a diatomic molecule can be expressed approximately as

U (r) = \frac{a}{r^{12}} - \frac{b}{r^{6}}

, where

a

and

b

are constants and

r

is the separation between the atoms.
(a) Determine the force function

F (r)

.
(b) Find the value of for which the molecule will be in the stable equilibrium.

Q. The potential energy between two atoms in a molecule is given by

U = a x^{3} - b x^{2}

where

a

and

b

are positive constants and

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is the distance between the atoms. The atom is in stable equilibrium when

x

is equal to

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Mole Concept & Avogadro Number

Standard IX Chemistry

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The diagrams represent the potential energy U of a function of the inter-atomic distance r. Which diagram corresponds to stable molecules found in nature

The diagrams represent the potential energy $U$ of a function of the inter-atomic distance $r$ . Which diagram corresponds to stable molecules found in nature