Jun 4, 2024 · Hydrogen is included in the periodic table. It is the first element on the table and has an atomic number of 1. It is placed in Group 1 and Period 1 of the periodic table.

May 23, 2024 · Is hydrogen a molecule and or compound or element? Hydrogen is an element because it is made up of only one type of atom, which is hydrogen itself.

Feb 7, 2025 · Is o2 an element or a compound? O2 is a molecule made up of two oxygen atoms. Oxygen itself is an element, but when it combines with another oxygen atom to form O2, it is …

Dec 28, 2024 · H2oThe symbol for hydrogen oxide is HO2H2O Because Hydrogen Oxide can be water.The most common meaning of Hydrogen oxide is Water which has formula H2O.

Hydrogen is an element, as it is a pure substance made of only one type of atom. It is the simplest and most abundant element in the universe. Chloroform is a compound, not an element or a mixture.

Feb 7, 2025 · The size of an atom is mainly determined by the number of protons in its nucleus. Since hydrogen has the fewest protons among all elements, it is the smallest atom.

May 31, 2024 · Group number indicates the number of valence electrons or outer electronic configuration. Group 1A elements such as H, Li, K,etc. have 1 valency. Hydrogen also has only one …

Jan 16, 2025 · The element hydrogen does have a metallic form, which exists under conditions of both low temperature and high pressure. Under more usual conditions hydrogen is a gas and as such, …

Feb 14, 2025 · No, oil is not an element. Oil is a complex mixture of hydrocarbons, which are organic compounds made primarily of hydrogen and carbon atoms. Elements are pure substances made up …

Jun 10, 2024 · Is ammonia an element compound or mixture? Ammonia is a compound, composed of one nitrogen atom and three hydrogen atoms. It is not an element nor a mixture.