B) are compressible.
Explanation:
The three members of the noble gas family are all compressible in nature and they are monoatomic gaseous molecules.
There are three states of matter which are:
Solid
liquid
Gases
Gases are random matter that have not fixed shape and volume. This implies that they can easily fit into any container they are placed into. Their state of motion is randomized and they are free to move in all directions colliding with one another and the walls of their container.
When pressure is applied to them, they get compressed and takes up the shape of any vessel they are in.
Gases are the only compressible state of matter.
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If one or more of the following occur: Gas formation, precipitate formation, color change, temperature change, or odor
The reaction becomes warmer or hotter as it proceeds. This means that touching the container in which the reaction is taking place would feel hotter. This means the reaction dissipates heat energy and has a negative enthalpy. The reaction is written with a negative delta- H in the products side for the reaction to be balanced.