Practice Structure 1. Models of the particulate nature of matter with authentic IB Chemistry exam questions for both SL and HL students. This question bank mirrors Paper 1A, 1B, 2 structure, covering key topics like atomic structure, chemical reactions, and organic chemistry. Get instant solutions, detailed explanations, and build exam confidence with questions in the style of IB examiners.
What is the total number of orbitals in the shell?
The elements sodium and magnesium are located in Period 3 of the periodic table and show predictable patterns in electron arrangement.
Write the electron configuration of sodium () and magnesium ().
Deduce the number of core and valence electrons in each atom.
State and explain which atom has a higher first ionization energy.
Magnesium can also form a ion. Explain how its electron configuration changes and why this ion is stable.
Which of the following explains why high-resolution mass spectrometry can distinguish between and ?
Aluminium is used in electrical wiring and reflective coatings due to its chemical and physical properties.
State the atomic number of aluminium.
Write the full electron configuration of a neutral aluminium atom.
State the number of valence electrons in an aluminium atom.
Explain why aluminium tends to form a 3+ ion when it reacts.
Which element has the following ground-state electron configuration: [Ar] 4s1 3d5?
Which statement correctly describes a compound?
Which of the following transitions in the hydrogen atom releases the most energy?
Which description best represents the particles in a gas?
The elements and have the following electronic configurations:
What is the formula of the compound formed between and ?
Sodium vapour lamps are used in street lighting and emit a characteristic yellow light.
State the atomic number of sodium.
Write the full electron configuration of a neutral sodium atom.
Identify the electron that is removed when a sodium atom forms an ion and state the full electron configuration of the resulting ion.
Practice Structure 1. Models of the particulate nature of matter with authentic IB Chemistry exam questions for both SL and HL students. This question bank mirrors Paper 1A, 1B, 2 structure, covering key topics like atomic structure, chemical reactions, and organic chemistry. Get instant solutions, detailed explanations, and build exam confidence with questions in the style of IB examiners.
What is the total number of orbitals in the shell?
The elements sodium and magnesium are located in Period 3 of the periodic table and show predictable patterns in electron arrangement.
Write the electron configuration of sodium () and magnesium ().
Deduce the number of core and valence electrons in each atom.
State and explain which atom has a higher first ionization energy.
Magnesium can also form a ion. Explain how its electron configuration changes and why this ion is stable.
Which of the following explains why high-resolution mass spectrometry can distinguish between and ?
Aluminium is used in electrical wiring and reflective coatings due to its chemical and physical properties.
State the atomic number of aluminium.
Write the full electron configuration of a neutral aluminium atom.
State the number of valence electrons in an aluminium atom.
Explain why aluminium tends to form a 3+ ion when it reacts.
Which element has the following ground-state electron configuration: [Ar] 4s1 3d5?
Which statement correctly describes a compound?
Which of the following transitions in the hydrogen atom releases the most energy?
Which description best represents the particles in a gas?
The elements and have the following electronic configurations:
What is the formula of the compound formed between and ?
Sodium vapour lamps are used in street lighting and emit a characteristic yellow light.
State the atomic number of sodium.
Write the full electron configuration of a neutral sodium atom.
Identify the electron that is removed when a sodium atom forms an ion and state the full electron configuration of the resulting ion.