Atomic structure hard

Atomic Structure Quiz (Hard)

1. Which of the following elements has the highest ionization energy?

a) Hydrogen b) Oxygen c) Helium

2. The concept of dual nature of electrons was given by:

a) J.J. Thomson b) Albert Einstein c) Louis de Broglie

3. What is the maximum number of electrons that can occupy the 4d subshell?

a) 2 b) 6 c) 10

4. The Aufbau principle is used to:

a) Determine the charge of an ion b) Determine the energy level of an electron c) Fill electrons in atomic orbitals

5. What is the electron configuration of a chlorine ion (Cl-)?

a) 1s2 2s2 2p6 3s2 3p6 b) 1s2 2s2 2p6 3s2 3p5 c) 1s2 2s2 2p6 3s2 3p7

6. The number of orbitals in the third principal energy level is:

a) 1 b) 3 c) 9

7. The energy of an electron in an atom is quantized. What does this mean?

a) The energy of an electron is continuous and can take any value b) The energy of an electron is discrete and can only take certain values c) The energy of an electron is negative

8. What is the maximum number of electrons that can have the quantum numbers n=3, l=2?

a) 2 b) 6 c) 10

9. The angular momentum quantum number (l) can have integral values ranging from:

a) 0 to n-1 b) 0 to n c) 1 to n-1

10. The Pauli exclusion principle states that:

a) Electrons in the same orbital must have opposite spins b) Electrons in the same orbital must have the same spin c) Electrons in different orbitals can have the same spin