Calcium is an element that can be found in the Periodic Table. A neutral calcium atom contains 20 electrons. Which statement about calcium is true?
Calcium is in Period 222 of the Periodic Table.
Calcium is in Group 444 of the Periodic Table.
Calcium is in Group 222 of the Periodic Table.
Calcium is in Period 888 of the Periodic Table.
77 exam-style questions on OCR GCSE Chemistry Atomic structure. Each one has a worked solution and a mark scheme showing where the marks go.