ELECTRON CONFIGURATION

How does the electron configuration of an atom relate to its chemical properties?

• A) It determines the atomic number of the atom.

• B) It dictates the number of protons in the atom's nucleus.

• C) It influences the arrangement of electrons in chemical bonding.

• D) It specifies the mass number of the atom.

Which rule states that electrons must occupy the lowest-energy orbitals available before filling higher-energy ones?

• A) Pauli exclusion principle

• B) Hund's rule

• C) Aufbau principle

• D) Heisenberg uncertainty principle

How many electrons are there in a fully occupied f sublevel?

• A) 2

• B) 6

• C) 10

• D) 14

According to the Pauli exclusion principle, what is the maximum number of electrons that can occupy a single orbital?

• A) 1

• B) 2

• C) 4

• D) 8

What does the term "electron configuration" refer to in chemistry?

• A) The arrangement of electrons in an atom's nucleus.

• B) The distribution of electrons among the orbitals of an atom.

• C) The number of protons in an atom's nucleus.

• D) The energy levels of electrons in an atom.

Which of the following statements best describes the relationship between the principal energy level and the energy of an electron?

• A) Electrons in higher principal energy levels have lower energy.

• B) Electrons in higher principal energy levels have higher energy.

• C) The energy of an electron is independent of the principal energy level.

• D) The energy of an electron is inversely proportional to the principal energy level.

Which of the following represents the electron configuration for an atom in the ground state of oxygen (O)?

• A) 1s² 2s² 2p⁴

• B) 1s² 2s² 2p³

• C) 1s² 2s¹ 2p⁶

• D) 1s² 2s² 2p⁵

What is the maximum number of electrons that can occupy the p sublevel?

• A) 2

• B) 4

• C) 6

• D) 8

What is the maximum number of electrons that can occupy the 4th principal energy level?

• A) 2

• B) 8

• C) 18

• D) 32

According to Hund's rule, how do electrons occupy orbitals in the same sublevel?

• A) By pairing up with opposite spins first.

• B) By following the Aufbau principle strictly.

• C) By spreading out to occupy as many orbitals as possible before pairing up.

• D) By filling orbitals of higher energy before filling lower energy ones.