Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 1>Q 7

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Select the correct statement(s) among the following:

$S_{1} :$ For an electron, the given set of quantum numbers is not possible : $n = 4, ℓ = 1, m = 0, s = + 1 / 2$
$S_{2} :$ The total number of orbitals in a subshell is $2 ℓ + 1,$ where $ℓ =$ Azimuthal quantum number.
$S_{3} :$ An orbital cannot accomodate more than $2$ electrons.
$S_{4} :$ All orbitals have directional character.

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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 1>Q 8

Which one is in the ground state?

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Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 1>Q 14

If the radius of the first Bohr orbit of the

H

atom is

r

, then radius of

2^{nd}

orbit of

{He}^{+}

is:

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Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 1>Q 15

The velocity of the electron in the ground state of

H

atom is

2.18 \times 10^{8} m / \sec

. The velocity of the electron in the

3^{rd}

orbit of

{Li}^{2 +}

ion in

cm / \sec

would be:

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Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 1>Q 16

Which one of the following explains light both as a stream of particles and as wave motion:

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Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 1>Q 17

Ratio of de-Broglie wavelength for a proton-and a

α

-particle, if they are accelerated from rest through same potential difference

V :

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Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 1>Q 18

If the de-Broglie wavelength of an electron revolving in

2^{nd}

orbit of

H

-atom is

x

, then radius of that orbit is given by:

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Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 1>Q 19

De-Broglie wavelength associated with an electron in the

3^{rd}

Bohr's orbit of

{He}^{+}

ion is:

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Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 1>Q 20

The wave motion of an electron in a Bohr's orbit of Hydrogen atom is as shown in diagram. The orbit number is:

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