Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 3 - Atomic Structure>DPP 3.2>Q 17

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JEE Main

IMPORTANT

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If the electron of the hydrogen atom is replaced by another particle of the same charge but of the double mass, then:

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Important Questions on Atomic Structure

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JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 3 - Atomic Structure>DPP 3.2>Q 18

Let

r, v

and

E

are the radius of the orbit, speed of the electron and the total energy of the electron, respectively. Which of the following quantities are proportional to the quantum number

{}^{'}n^{'} ?

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 3 - Atomic Structure>DPP 3.2>Q 19

Select the correct statements for hydrogen like atoms or ions.

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 3 - Atomic Structure>DPP 3.2>Q 20

An electron in a hydrogen atom makes a transition from

n = n_{1}

to

n = n_{2} .

The time period of the electron in the initial state is eight times that in the final state. What are the possible values of

n_{1}

and

n_{2} ?

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 3 - Atomic Structure>DPP 3.2>Q 21

Identify the correct statement(s) from the following:

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 3 - Atomic Structure>DPP 3.2>Q 22

A hydrogen-like atom has ground state binding energy

122.4 eV

. Then:

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 3 - Atomic Structure>DPP 3.3>Q 1

What is the ratio of the velocities of

{CH}_{4}

and

O_{2}

molecules so that they are associated with de-Broglie waves of equal wavelength?

(C = 12 u, H = 1 u, O = 16 u)

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 3 - Atomic Structure>DPP 3.3>Q 2

A golf ball has a mass of

40 g

and a speed of

45 {ms}^{- 1} .

If the speed can be measured with an accuracy of

2 %,

calculate the uncertainty in the position.

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JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part 1 JEE Main & Advanced>Chapter 3 - Atomic Structure>DPP 3.3>Q 3

If the uncertainty in the position of a moving electron is equal to its de-Broglie wavelength, then the minimum percentage error in measurement of velocity will be approximately

8 % .

Explain.