Question

Name two non-metals which exist in the solid state and two non-metals which exist in the gaseous state.

Answer 1

Part: 1: Two non-metals that exist in the solid state are Sulphur and phosphorus.

1. Sulfur (S) is a nonmetallic chemical element that is a tasteless, odorless, brittle solid that is pale yellow in color, a poor conductor of electricity, insoluble in water. It is a nonmetal that reacts with oxygen to form acidic oxide.
2. Phosphorus (P) is a non-metallic chemical element of the nitrogen family with the atomic number 15. At room temperature, it is a colorless, semi-transparent, soft, wax-like solid that glows in the dark. It is a nonmetal that reacts with oxygen to form acidic oxide.
   

Part: 2: Two non-metals that exist in the gaseous state are Nitrogen and oxygen.

1. Nitrogen (N) is a non-metallic element with atomic number 7. It is a colorless, odorless, tasteless gas that is the most plentiful element in Earth's atmosphere.
2. Oxygen (O) is a nonmetallic chemical element of group 16 of the periodic table with atomic number 8. It is a colorless, odorless, tasteless gas that is essential for all living organisms.