8 февр. 2016 г. · Helium is an element.When two or more elements come together to form a substance it is known as a compound. Is hydrogen an element, a compound, or a mixture? What is the meaning of element and compound? Is H2 an element or a compound? What is a compound and an element? Другие результаты с сайта www.quora.com

23 мая 2018 г. · Element An element is a pure substance as well, because if we fill up a balloon with just helium gas, it will only contain helium atoms.

Helium is a chemical element with the atomic number 2 and the symbol He. It is a colourless, odourless, tasteless, non-toxic, inert monatomic gas.

9 янв. 2020 г. · On the periodic table of elements, helium is element number . Was this answer helpful? Is helium an element or pure substance or compound?

26 июн. 2018 г. · Answer: 1)He and H2. He is helium , so an element. H2 is a molecule of hydrogen , so an element also. 2)CO and Co.

Helium is a chemical element; it has symbol He and atomic number 2. It is a colorless, odorless, non-toxic, inert, monatomic gas and the first in the noble ...

25 окт. 2024 г. · helium (He), chemical element, inert gas of Group 18 (noble gases) of the periodic table. The second lightest element (only hydrogen is lighter ...

20 сент. 2023 г. · H and He are elements because they are composed of only one type of atom, while HF is a compound because it contains multiple types of atoms bonded together to ...

The difference between an element and a compound is that an element is a substance made of same type of atoms, whereas a compound is made of different elements ...