Beta Question Bank for Engineering: Chemistry>Chapter 2 - Structure of Atom>EXERCISE-2>Q 34

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A hydrogen - like atom has ground state binding energy $122.4 eV .$ Then :

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Important Questions on Structure of Atom

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Beta Question Bank for Engineering: Chemistry>Chapter 2 - Structure of Atom>EXERCISE-2>Q 35

Uncertainty in position is twice the uncertainty in momentum Uncertainty in velocity is :-

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Beta Question Bank for Engineering: Chemistry>Chapter 2 - Structure of Atom>EXERCISE-2>Q 47

A particle

X

, moving with a certain velocity has a de-Broglie wavelength of

1 Å .

If a particle

Y

has a mass of

25 %

and velocity of

75 %

that of

X

, de-Broglie's wavelength of

Y

will be

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Beta Question Bank for Engineering: Chemistry>Chapter 2 - Structure of Atom>EXERCISE-2>Q 49

If

m =

magnetic quantum number and

ℓ =

azimuthal quantum number then :-

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Beta Question Bank for Engineering: Chemistry>Chapter 2 - Structure of Atom>EXERCISE-2>Q 51

After np orbitals are filled, the next orbital filled will be

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Beta Question Bank for Engineering: Chemistry>Chapter 2 - Structure of Atom>EXERCISE-2>Q 52

In Bohr's model of the hydrogen atom the ratio between the period of revolution of an electron in the orbit of

n = 1

to the period of the revolution of the electron in the orbit

n = 2

is:-

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Beta Question Bank for Engineering: Chemistry>Chapter 2 - Structure of Atom>EXERCISE-2>Q 53

Let

v_{1}

be the frequency of the series limited of the Lyman series,

v_{2}

be the frequency of the first line of the Lyman series, and

v_{3}

be the frequency of the series limited of the Balmer series.

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Beta Question Bank for Engineering: Chemistry>Chapter 2 - Structure of Atom>EXERCISE-2>Q 54

The energies of energy levels

A, B

and

C

for a given atom are in the sequence

E_{A} < E_{B} < E_{C} .

If the radiantions of wavelengths

λ_{1}, λ_{2}

and

λ_{3}

are emitted due to the atomic transitions

C

to

B, B

to

A

and

C

to

A

respective then which of the following relations is corret

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Beta Question Bank for Engineering: Chemistry>Chapter 2 - Structure of Atom>EXERCISE-2>Q 55

The wavelengths of photons emitted by electron transform between two similar levels in

H

and

{He}^{+}

are

λ_{1}

and

λ_{2}

respectively. Then :-