The chemical formula K2SO4 consists of:
- K (Potassium): There are 2 potassium atoms.
- S (Sulfur): There is 1 sulfur atom.
- O (Oxygen): There are 4 oxygen atoms.
So the correct identification of the elements in K2SO4 and the number of atoms of each element is: 2 potassium atoms, 1 sulfur atom, and 4 oxygen atoms.