Atomic Structure
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
The nuclear atom
SubtopicThe nuclear atom under Atomic Structure for Grade 12 IB.
Preview questions (no answers)
- 1.
What change occurs when a neutral magnesium atom forms a ion?
A.It gains two protons
B.It loses two protons
C.It gains two electrons
D.It loses two electrons
- 2.
Which statement correctly defines isotopes of the same element?
A.Atoms with the same mass number but different atomic numbers
B.Atoms with the same number of protons but different numbers of neutrons
C.Atoms with the same number of neutrons but different numbers of protons
D.Atoms with different numbers of electrons but the same number of neutrons
- 3.
How many protons, neutrons, and electrons are present in a neutral atom of phosphorus-31, ?
A.15 protons, 16 neutrons, 15 electrons
B.15 protons, 31 neutrons, 15 electrons
C.16 protons, 15 neutrons, 16 electrons
D.31 protons, 15 neutrons, 31 electrons
Download the worksheet for Atomic Structure - The nuclear atom to practice offline. It includes additional chapter-level practice questions.
Electron configuration
SubtopicElectron configuration under Atomic Structure for Grade 12 IB.
Preview questions (no answers)
- 1.
What is the maximum number of electrons that can occupy the second main energy level ()?
A.2
B.8
C.18
D.32
- 2.
Which principle or rule states that electrons must occupy the lowest energy orbital available?
A.Hund's Rule
B.Pauli Exclusion Principle
C.Heisenberg Uncertainty Principle
D.Aufbau Principle
- 3.
How many electrons are located in the subshell of a neutral Zinc atom ()?
A.2
B.8
C.10
D.12
Download the worksheet for Atomic Structure - Electron configuration to practice offline. It includes additional chapter-level practice questions.
Electrons in atoms (HL only)
SubtopicElectrons in atoms (HL only) under Atomic Structure for Grade 12 IB.
Preview questions (no answers)
- 1.
How many total orbitals are present in the principal energy level?
A.3
B.6
C.9
D.18
- 2.
Which statement best explains why successive ionization energies for an element always increase?
A.The nuclear charge decreases as electrons are removed.
B.The radius of the ion increases, making it harder to remove electrons.
C.The remaining electrons experience less electrostatic repulsion and a greater effective nuclear charge.
D.The electrons are being removed from subshells that are further from the nucleus.
- 3.
In the provided diagram of electronic transitions in a hydrogen atom, which transition corresponds to the emission of visible light?
A.Transition A
B.Transition B
C.Transition C
D.Transition D
Download the worksheet for Atomic Structure - Electrons in atoms (HL only) to practice offline. It includes additional chapter-level practice questions.