Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 2>Q 38

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In a $H$ atom, if $' x'$ is the radius of the first Bohr orbit, the de-Broglie wavelength of an electron in the third orbit is:

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Important Questions on Structure of Atom

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Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 2>Q 39

The uncertainty in position of an electron & helium atom are same. If the uncertainty in momentum for the electron is

32 \times 10^{5},

then the uncertainty in momentum of helium atom will be

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Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 2>Q 40

A golf ball has a mass of

40 g

and a speed of

45 m / s .

If the speed can be measured within the accuracy of

2 %

, then the uncertainty in position will be approximately

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Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 2>Q 41

Which of the following transition shows neither absorption nor emission of energy in case of a hydrogen atom?

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Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 2>Q 42

The magnetic moment of

X^{a +} (Z = 26)

is

\sqrt{24} BM .

Hence, the number of unpaired electrons and value of "a", respectively are

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Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 2>Q 43

For a shell of principal quantum number

n = 4

, which is incorrect?

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Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 2>Q 44

Which set has the same number of

s -

electrons?

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Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 2>Q 45

Which electronic configuration does not follow the pauli's exclusion principle

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Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 2>Q 46

For a

d -

electron, the orbital angular momentum is