Which statement correctly describes the trend in metallic radius in group I elements
Na to Rb?
I and II only
I and III only
II and III only
I, II and III
The Period 4 elements gallium (Ga), germanium (Ge), arsenic (As) and selenium (Se) are the elements directly below aluminium, silicon, phosphorus and sulfur in the Periodic Table.
The properties of each Period 4 element resemble those of the Period 3 element directly above it.
Which period 4 elements form oxides that dissolve in water to give an acidic solution?
Ga and Ge
Ge and Se
As and Se
Se only
Non-metallic elements in the p block can have the following two properties:
property 1 atoms with no paired electrons in 3p
property 2 have an oxide that can form a strong acid in water
Which properties do phosphorus and sulfur have?
| sulfur | phosphorus | |
| A |
2 only |
1 and 2 |
| B |
1 and 2 |
2 only |
| C |
1 and 2 |
1 and 2 |
| D | 2 only | 1 only |
Which graph correctly illustrates a trend found in the halogen group?
Which of the following statements is true as you move down group 1?
The first ionisation energy increases
The atomic radius increases
The melting point increases
The reaction with water becomes less vigorous
Which statement is not correct?
Caesium has a lower first ionisation energy than rubidium
Rubidium reacts less violently with water than potassium
Potassium has a larger atomic radius than sodium
Sodium melts at a higher temperature than caesium
When a student dissolved the oxides of calcium and tellurium in water, the resulting solutions were tested with litmus paper. It would be seen that:
Calcium turns litmus paper blue, but tellurium turns litmus paper red
Calcium and tellurium both turn litmus paper red
Calcium turns litmus paper red, but tellurium turns litmus paper blue
Calcium and tellurium both turn litmus paper blue
Which of the following statements about strontium oxide and lithium oxide are true?
I and II only
I and III only
II and III only
I, II and III
Which statements are correct?
I and II only
I and III only
II and III only
I, II and III
Which is a characteristic property of sodium oxide?
It turns moist litmus paper blue
It turns moist litmus paper red
When it dissolves in distilled water it forms a solution with pH less than 7
It reacts with magnesium metal
