Gold is one of the most durable metals, does not react with most chemicals.
Hydrogen accounts for 75% of the total cosmic volume and over 90% of the total number of atoms.This is the most common element in the universe.
Fluorine is a powerful oxidizing agent, always has a number of oxidants -1 in all compounds.
Carbon exists in almost all organic matter.
When Natri met water, the reaction was very strong and burned violently, maybe even exploding.
Sulfur is a key ingredient in explosives, such as gunpowder, matches.In addition, sulfur is also present in fertilizers and pesticides, fungicides.
Neon rare gas is almost inert, does not affect any substance.However, Neon can combine with fluorine in laboratory experiments to produce a rather bizarre compound.
Nitrogen is a component of every living organism, accounting for 78.9% of the Earth's atmosphere.
Mercury is a metallic element in liquid form at room temperature.This element is the heaviest, most flammable and most dangerous metal.
Oxygen is very active, can produce compounds with almost all elements.