Structure of Atom Test

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Structure of Atom Test - 3

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Weekly Quiz Competition

Question 1
4 / -1

Energy of photon of visible light is

A
1 eV

B
1 MeV

C
1 ev

D
1 KeV

Solution
Question 2
4 / -1

As per de-Broglie's formula a macroscopic particle of mass 100 g and moving a velocity of 100 cm s^-1 will have a wavelength of

A
6.6 × 10^-29 cm

B
6.6 × 10^-30 cm

C
6.6 × 10^-31 cm

D
6.6 × 10^-32 cm

Solution
Question 3
4 / -1

Uncertainty in the position of an electron (mass = 9.1 × 10^-31 kg) moving with a velocity 300 ms^-1 accurate upon 0.001 % will be (h = 6.63 × 10^-34 Js)

A
19.2 × 10^-2 m

B
5.76 × 10^-2 m

C
1.93 × 10^-2 m

D
3.84 × 10^-2 m

Solution
Question 4
4 / -1

In an atom, the total number of electrons having quantum numbers n = 4, |m_l| = 1 and m_s = - 1/ 2 is

A
3

B
2

C
6

D
9

Solution
Question 5
4 / -1

The correct set of four quantum number for the valence electrons of rubidium atom (Z = 37) is

A
5, 0, 0, + 1/2

B
5, 1, 0, + 1/2

C
5, 1, 1, + 1/2

D
5, 0, 1, + 1/2
Question 6
4 / -1

Which of the following sets of quantum numbers could represent the last electron added to complete the electron configuration for a ground state atom of Br (Z = 35) according to the Aufbau principle n : l ; m_l ; m_s

A
4; 0; 0; - 1/2

B
4; 1; 1; -1/2

C
3; 1; 1; -1/2

D
4; 1; 2; + 1/2

Solution
Question 7
4 / -1

The energy absorbed by each molecule (A₂) of a substance is 4.4 × 10^–19 J and bond energy per molecule is 4.0 × 10^–19 J. The kinetic energy of the molecule per atom will be:

A
2.2 × 10^–19 J

B
2.0 × 10^–19 J

C
4.0 × 10^–20 J

D
2.0 × 10^–20 J
Question 8
4 / -1

If the energy of a photon is given as 3.03 × 10^–19 J then, the wavelength (λ) of the photon is :

A
6.56 nm

B
65.6 nm

C
656 nm

D
0.656 nm
Question 9
4 / -1

The magnetic quantum number for d-orbital is given by

A
2

B
0, ± 1, ± 2

C
0, 1, 2

D
5
Question 10
4 / -1

The maximum number of electrons that can have principal quantum number, n = 3 and spin quantum number, m_s = - (1/2), is

A
3

B
5

C
7

D
9

Solution

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Structure of Atom Test - 3

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Structure of Atom Test - 3

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Question 1

1 eV

1 MeV

1 ev

1 KeV

Solution

Question 2

6.6 × 10-29 cm

6.6 × 10-30 cm

6.6 × 10-31 cm

6.6 × 10-32 cm

Solution

Question 3

19.2 × 10-2 m

5.76 × 10-2 m

1.93 × 10-2 m

3.84 × 10-2 m

Solution

Question 4

3

2

6

9

Solution

Question 5

5, 0, 0, + 1/2

5, 1, 0, + 1/2

5, 1, 1, + 1/2

5, 0, 1, + 1/2

Question 6

4; 0; 0; - 1/2

4; 1; 1; -1/2

3; 1; 1; -1/2

4; 1; 2; + 1/2

Solution

Question 7

2.2 × 10–19 J

2.0 × 10–19 J

4.0 × 10–20 J

2.0 × 10–20 J

Question 8

6.56 nm

65.6 nm

656 nm

0.656 nm

Question 9

2

0, ± 1, ± 2

0, 1, 2

5

Question 10

3

5

7

9

Solution

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6.6 × 10^-29 cm

6.6 × 10^-30 cm

6.6 × 10^-31 cm

6.6 × 10^-32 cm

19.2 × 10^-2 m

5.76 × 10^-2 m

1.93 × 10^-2 m

3.84 × 10^-2 m

2.2 × 10^–19 J

2.0 × 10^–19 J

4.0 × 10^–20 J

2.0 × 10^–20 J