Describe the arrangement of particles in solid aluminium.
Suggest two properties of aluminium that make it suitable for conducting cables used in long-distance overhead power lines.
Describe the structure of a ceramic material.
State the property of a ceramic material that makes it suitable for this application.
Aluminium reacts with chlorine to produce a white solid chloride containing $79.7\%$ chlorine and that sublimes (changes straight from a solid to a gas) at $180\,^\circ\text{C}$. Describe the structure and bonding in this compound. Suggest why this leads to the low sublimation temperature.
Calculate the empirical formula of the chloride. Show your working.
At $200\,^\circ\text{C}$ and $100\,\text{kPa}$, a $1.36\,\text{g}$ sample of this chloride occupied $200\,\text{cm}^3$. Calculate the relative molecular mass, $M_r$, of the chloride. Give your answer to three significant figures.
Deduce the molecular formula of this chloride at $200\,^\circ\text{C}$.