NEET Chemistry Structure of Atom - Practice Quiz - 2 (Difficulty Level - Hard)

1. Which quantum number determines the shape of an orbital?

Principal quantum number (n)
Azimuthal quantum number (l)
Magnetic quantum number (m)
Spin quantum number (s)

2. Which principle states that no two electrons in an atom can have the same set of four quantum numbers?

Hund's Rule
Aufbau Principle
Pauli Exclusion Principle
Heisenberg Uncertainty Principle

3. The energy difference between the 2s and 2p orbitals in a multi-electron atom is primarily due to

Spin-spin coupling
Nuclear shielding
Electron-electron repulsion
Nuclear attraction

4. The number of radial nodes in a 4p orbital is

0
1
2
3

5. What is the total number of orbitals associated with the principal quantum number n = 3?

3
6
9
12

6. For a d-orbital the magnetic quantum number (m) can have how many possible values?

3
5
7
10

7. The electron configuration of an element with atomic number 24 (Chromium) is

1s2 2s2 2p6 3s2 3p6 3d5 4s1
1s2 2s2 2p6 3s2 3p6 3d4 4s2
1s2 2s2 2p6 3s2 3p6 3d6 4s0
1s2 2s2 2p6 3s2 3p6 3d3 4s3

8. Which element has the ground-state electron configuration [Kr] 4d10 5s2 5p2?

Sn
Sb
Te
I

9. What is the wavelength of an electron moving with a speed of 1.5 x 10^7 m/s (mass of electron = 9.11 x 10^-31 kg Planck's constant = 6.63 x 10^-34 J·s)?

4.85 x 10^-11 m
3.24 x 10^-10 m
1.62 x 10^-10 m
2.43 x 10^-10 m

10. In the hydrogen atom the energy of an electron in the n-th orbit is given by the formula

-13.6 eV/n^2
-13.6 eV x n^2
-13.6 eV x n
-13.6 eV/n

---

Your score =

Score in percentage =

Correct Answers 1 =

Correct Answers 2 =

Correct Answers 3 =

Correct Answers 4 =

Correct Answers 5 =

Correct Answers 6 =

Correct Answers 7 =

Correct Answers 8 =

Correct Answers 9 =

Correct Answers 10 =