Question

hardness of metals and non metals.​

Answer 1

Explanation:

Non-metals like nitrogen, oxygen, carbon dioxide, argon, neon, helium, krypton, chlorine, and fluorine are the ones which constitute the air in our surroundings. Hardness: Out of all the non-metals, only solids are expected to be hard. Sulphur and phosphorus are quite soft, but diamond is very hard.

Answer 2

Answer:

Hope It is helpful to you

Explanation:

Resistance of a material to deformation, indentation, or penetration is hardness. All metals are hard except sodium and potassium, which are soft and can be cut with a knife. Non-metals are usually not hard. But the exception is the non-metal diamond, the hardest substance.