The symbols of some elements in the Periodic Table are shown.
Ne Li O F Al Ca
For each of the following, give the symbol of an element which matches the description.
Each element may be used once, more than once or not at all.
Which element is unreactive?
Which element is in Group VII of the Periodic Table?
Which element forms an ion with a 1+ charge?
Which element is in Period 3 of the Periodic Table?
The Periodic Table consists of elements arranged in a particular order.
What is the Periodic Table arranged in order of?
Element Y is located in Group VII of the Periodic Table.
Write the formula of the ion formed by element Y.
Give two physical properties of element Y.
Calcium is a metal located in Group II of the Periodic Table.
What is the charge of a calcium ion?
Bromine is located in Group VII of the Periodic Table.
Give the formula and state of bromine at room temperature.
An element, M, has the electron distribution 2 + 8 + 18 + 3.
Which group in the Periodic Table is element M likely to be in?
Predict whether element M is a poor or a good conductor of electricity.
For each of the following, name an element which matches the description.
It is the only non-metal which is a good conductor of electricity.
An element which can form an ion of the type X³⁺.
Element Z is in Period 3 and Group V.
Identify element Z.
Aqueous chlorine reacts with aqueous magnesium bromide.
Cl₂ + MgBr₂ → Br₂ + MgCl₂
How does this reaction show that chlorine is more reactive than bromine?
The symbols of the elements in Period 2 of the Periodic Table are shown.
Li Be B C N O F Ne
Which element has atoms with only two electrons in the outer shell?
The table below includes information about some of the elements in Period 2.
Why does neon exist as single atoms but fluorine exists as molecules?
What determines the order of the elements in a period?
The table below gives the electron distributions of atoms of different elements.
| Element | Electron Distribution |
|---|---|
| A | 2, 8, 1 |
| B | 2, 8, 8, 1 |
| C | 2, 8, 1 |
| D | 2, 8, 7 |
Which two elements are in the same group?
Which element reacts violently with cold water?
Predict the formulae of the following compounds.
Nitrogen fluoride
Phosphorus sulfide
In the Periodic Table, the elements are arranged in columns called Groups and in rows called Periods.
Complete the table for some of the elements in Period 3.
What is the relationship between the group number and the number of valency electrons?
Trends can be observed in the way Group I and Group VII elements react.
Suggest why Group I elements lithium, sodium and potassium are all stored in paraffin oil.