Free Arrangement of elements questions for IGCSE Chemistry (0620), part of The Periodic Table. Each question has the answer and the marking points an examiner would look for.
Generate a full Arrangement of Elements worksheet →All The Periodic Table questionsWhich term is described by this statement?
“A vertical column of the Periodic Table; its elements have the same number of outer-shell electrons.”
Answer: D
The Periodic Table shows trends across periods and down groups.
1 Elements change from metallic to non-metallic across a period.
2 All elements in Group IV are metals.
3 The group number is equal to the number of electron shells.
Which statements are correct?
Answer: D
Predicting properties from the Periodic Table.
An element is in Group VI. Predict the charge on its ion and the formula of its compound with sodium.
Explain why elements in Group I and Group VII form ionic compounds.
| Part | Answer and marking points | Marks |
|---|---|---|
| (a) | 2−; Na₂X charge 2− B1 Na₂X B1 | 2 |
| (b) | Group I loses 1, Group VII gains 1 Group I atoms lose one electron B1 Group VII atoms gain one electron to achieve full outer shells B1 | 2 |
Element X is in Group II and Period 4.
State the number of electrons in the outer shell of an atom of X.
State the number of occupied electron shells.
Predict the formula of the compound formed between X and chlorine.
Name element X.
| Part | Answer and marking points | Marks |
|---|---|---|
| (a) | 2 2 B1 | 1 |
| (b) | 4 4 B1 | 1 |
| (c) | XCl₂ XCl₂ B1 | 1 |
| (d) | calcium calcium B1 | 1 |
Elements across Period 3 change from metal to non-metal.
Describe the change in the type of oxide across Period 3.
Explain why argon is unreactive.
| Part | Answer and marking points | Marks |
|---|---|---|
| (a) | basic → amphoteric → acidic Any 2 of: metal oxides on the left are basic; aluminium oxide is amphoteric; non-metal oxides on the right are acidic B2 | 2 |
| (b) | full outer shell it has a full outer shell B1 | 1 |
The Periodic Table is arranged in order of proton number.
State what the elements in the same group have in common.
Describe how metallic character changes across a period.
Explain why elements in the same group have similar chemical properties.
| Part | Answer and marking points | Marks |
|---|---|---|
| (a) | same number of outer electrons the same number of outer-shell electrons B1 | 1 |
| (b) | decreases metallic character decreases across a period (metals on the left, non-metals on the right) B1 | 1 |
| (c) | same outer electrons they have the same number of outer electrons, which determines how they react B1 | 1 |
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