Define the term metallic bonding.
State and explain how the ionic radius of the Group 2 elements changes down the group.
Table 2.1 gives successive ionisation energy data for beryllium, $\text{Be}$. Use Table 2.1 to state and explain: • the overall pattern in these values • what the large difference between the 2nd and 3rd ionisation energies shows.
Beryllium occurs as the single isotope $^{9}_{4}\text{Be}$. Describe how the mass is distributed within an atom of $^{9}_{4}\text{Be}$.
Complete Table 2.2 so that it shows the numbers of protons and neutrons in the isotopes of magnesium.
Fig. 2.1 shows how a beam of protons behaves in an electric field. Complete Fig. 2.1 to show what happens to separate beams of neutrons and electrons in the same electric field. Label your diagram clearly. Assume that the beams of each particle have the same velocity.
State what is seen when dilute hydrochloric acid is added to separate samples of barium oxide and barium carbonate. barium oxide … barium carbonate …
Write an equation for the reaction of strontium, $\text{Sr}$, with an excess of cold water.
State how the solubility of the Group 2 sulfates varies down the group.