Question 4
[Maximum number: 1]
Which diagram shows the arrangement of the outer shell electrons in a molecule of water?
CAIE IGCSE Chemistry Single Covalent Bonds in Molecules
Practise drawing dot-and-cross diagrams for simple molecules, showing each shared pair, complete outer shell and lone pair without adding extra electrons.
How this is tested
- represent each single covalent bond as one shared pair containing one electron from each atom
- complete hydrogen duets and other atoms' outer shells while retaining all required lone pairs
- check a molecular diagram against the formula so every atom has the correct number of bonds