Compare the speed and space of atoms in a solid, liquid and gas.

Decrease order of speed of atoms in solid state, liquid state and gaseous states:  gas > liquid> solid

Decreasing order of space of atoms in solid state, liquid state and gaseous states:  gas > liquid> solid

Explanation:

Solid state : In this state, the particles are closely packed and does not have any space between them. They have least kinetic energy due to restricted movement. This state has a definite shape and volume.

Liquid state :  In this state, particles are present in random and irregular pattern. The particles are closely arranged but they can move from one place to another and thus have higher kinetic energy as compared to solids. This state has a definite volume but does not have a fixed shape.

Gaseous state :  In this state, particles are loosely arranged and have a lot of space between them. They have highest kinetic energy. This state has indefinite volume as well as shape.

Decrease order of speed of atoms in solid state, liquid state and gaseous states:  gas > liquid> solid

Decreasing order of space of atoms in solid state, liquid state and gaseous states:  gas > liquid> solid

Answer;

As (Arsenic) and Ar (Argon)

Explanation;

-Metalloids are chemical elements that exhibits some properties of metals and some of nonmetals. The chemical elements classified as metalloids are boron, silicon, germanium, arsenic, antimony, and tellurium. Noble gases are group eight elements that have an octet configuration. These includes neon, argon, helium, krypton, xenon and radon.