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The table organises repeating patterns - Paper 1

Read the information, then answer the questions. An adult may read the instructions aloud. Show your working where asked.

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Supplied periodic-table entries (modern groups 1 to 18): magnesium: atomic number 12, group 2, period 3; calcium: atomic number 20, group 2, period 4. Groups are columns; periods are rows. The table is ordered by atomic number. No chemical experiment is required.

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