Oxides, Group 1 & Group 17 (DP IB Chemistry: SL)

Which statement correctly describes the trend in metallic radius in group I elements
Na to Rb?

1. Increases moving down the group
2. Increases moving down due to the addition of electron shells
3. Decreases moving down due to increasing nuclear forces

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?

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? 

Which graph correctly illustrates a trend found in the halogen group?

Which of the following statements is true as you move down group 1?

Which statement is not correct?

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:

Which of the following statements about strontium oxide and lithium oxide are true?

1. Strontium oxide has pH > 7
2. Lithium oxide is basic
3. A solution containing both oxides would turn universal indicator red 

Which statements are correct?

1. Fluorine will react with potassium chloride solution to produce chlorine.
2. Iodine will react with sodium chloride solution to produce chlorine.
3. Bromine will react with lithium iodide solution to produce iodine.

Which is a characteristic property of sodium oxide?

G and J are oxides of different Period 3 elements.

If one mole of J is added to water, the solution formed is neutralised by exactly one mole of G.

What could be the identities of G and J? 

An element is found in group I of the periodic table, below lithium and sodium. From this information it is likely that the element is a metal with 

A student opens a freezer in their lab to remove a test tube containing an oxide of a Period 3 element. The oxide is a solid and forms a solution with a low pH when dissolved in water. 

Identify the element.

The x-axis of the graph below is the atomic number of the elements in Period 3.

Which variable could represent the y-axis?

The first ionisation energies and reactions with water for sodium and caesium are compared below.

Which set of statements, comparing sodium and caesium, are correct?

An element Z has the same oxidation state as a common iron ion but the Z ion has the same number of electrons as Ne . An oxide of element Z reacts with a strong acid to produce a chloride salt but does not dissolve in water.

What is the correct identity of element Z?

X, Y and Z represent different halogens. The table shows the results of nine experiments in which aqueous solutions of X₂, Y₂ and Z₂ were separately added to separate aqueous solutions containing X^-, Y^- and Z^- ions.

What is the correct order to show the decreasing strength of the ions X^-, Y^- and Z^-  as reducing agents?

A student wants to identify an unknown alkali metal halide salt, MX. The student performs experiments on the alkali metal, M, and halogen, X₂, which make up the salt.

The student’s results and observations are shown.

What is the identity of the unknown alkali metal, MX?

A dark red/brown solution is formed when a halide salt containing the halide ion Y^- reacts with aqueous chlorine. This solution then forms a violet solution when shaken with a cyclohexane solution.

What is halogen, Y?

A student reacts the most basic period 3 oxide with the strongest acid formed from a period 3 element.

Identify the correct equation for this reaction