Complete Table 1.1 for $^{130}\text{Te}$ by entering the nucleon number, the number of neutrons and the number of electrons.
Identify the sub-shell in an atom of Te that contains electrons with the lowest energy.
Construct an equation to represent the first ionisation energy of Te.
The radius of Te ions decreases after each successive ionisation. State two factors that are responsible for the increase in the first six ionisation energies of Te.
Sketch a graph in Fig. 1.1 to show the trend in the first seven ionisation energies of Te.
Te reacts with $\text{F}_2$ at $150\,^{\circ}\text{C}$ to form $\text{TeF}_x$. Molecules of $\text{TeF}_x$ are octahedral with bond angles of $90^{\circ}$. Explain why $\text{TeF}_x$ is octahedral with bond angles of $90^{\circ}$.
$\text{TeF}_x$ reacts with water to produce tellurium hydroxide and HF. The oxidation number of tellurium remains unchanged in this reaction. Construct an equation for the reaction of $\text{TeF}_x$ with water.
Name the type of reaction that occurs when $\text{TeF}_x$ reacts with water.