It is compressed so that the volume is reduced making it easier to transport via gas tanks. However, it must not be exposed to high temperature because the pressure inside the tank will increase more than the tank can hold resulting to explosions. The gas has to be decompressed to atmospheric before it can be inhaled.
Ionic bond I think. It is the only one related to ions.
Answer:
Across a period, effective nuclear charge increases as electron shielding remains constant. A higher effective nuclear charge causes greater attractions to the electrons, pulling the electron cloud closer to the nucleus which results in a smaller atomic radius. ... This results in a larger atomic radius.
Explanation:
Now lets d8