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.
Practise OCR GCSE Chemistry Atomic structure with exam-style questions for Foundation and Higher tier. 97 questions, matched to the OCR GCSE Chemistry (J248) specification and written in Paper 1 and Paper 2 (Foundation Tier) or Paper 3 and Paper 4 (Higher Tier) style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.