Answer:
good electrical conductor
lustre in appearance
Answer: Exothermic reaction
Explanation:
Exothermic reactions lose energy, or ΔH, when they react.
The best answer for the question above would be the chloroflourocarbons or the CFCs. These chloroflourocarbons or CFCs are the ones responsible for the depletion of the ozone - which leads to leaving a hole in its layer. These gases eat out the ozone layer and allows harmful UV rays of the sun to come in the Earth.
Answer:
krypton is a cation
magnesium is also a cation
aluminium is a anion
and , silicon is cation