Correct answer is magnesium bromide. This is an ionic compound with metal forming a positive ion - K+ and halogen forming a negative ion - Br-. When group 7 element form ions they have a suffix -ide. Bromine is the element and when it forms a negative ion bromine is called bromide with the suffix.
Magnesium gives 2 electrons and bromine can take only 1 electron, therefore 2 bromine atoms are needed. Therefore magnesium forms ionic bonds with 2 bromine atoms.
The compound is called magnesium bromide
In drinking water the clear, colorless chemical chlorine might be found. The chlorine is added <span>to drinking </span>water to disinfect it and kill germs. The process is called Water Chlorination. Chlorine is a highly efficient disinfectant. Its purpose in drinking water is to kill <span>bacteria, viruses, and protozoans, that commonly grow in </span>water<span> supply reservoirs, on the walls of </span>water<span> mains and in storage tanks.</span>
If the volume is cut in half then the pressure is doubles that is boyle's law