Long answer·Standard multi-step (3/5)·No calculator
Difficulty guide
The label describes the problem, not your ability.
1/5 - Foundational
Warm-up setup; checks one basic idea.
2/5 - Routine exam skill
Normal syllabus skill; usually one main rule or interpretation.
3/5 - Standard multi-step
Exam-style problem with multiple steps or a common trap.
4/5 - Hard exam skill
High-end exam problem; combines methods carefully.
5/5 - Challenge
Stretch problem beyond normal exam pressure.
Question
A molecule has one central atom, three surrounding atoms and one lone pair on the central atom. Predict its electron-pair geometry, molecular shape and approximate bond angle relation.
Total: 5 marks
(a) Write its VSEPR type. (1 mark)
(b) State electron-pair geometry. (1 mark)
(c) State molecular shape. (1 mark)
(d) Compare its bond angle with . (2 marks)
Something wrong with this item?