A molecule can have only one atom. Because most molecules have 2 or more atoms, it’s natural to speak of multi-atom molecules as ‘molecules‘.
Considering this, how many atoms can a molecule have?
Also Know, is he a molecule or atom? A single helium (symbol He) atom is capable of independent existence so Helium is a molecule as well as an atom.
Additionally, can hydrogen exist as a single atom?
Hydrogen is a very reactive element. It doesn’t exist as a single atom in nature. Neither do any of the other binary nonmetals — nitrogen, oxygen, fluorine, chlorine, bromine, and iodine. They react with each other and form binary molecules because the binary molecules are more stable than single atoms (by a lot!).
How many atoms are in a human?
In summary, for a typical human of 70 kg, there are almost 7*1027 atoms (that’s a 7 followed by 27 zeros!) Another way of saying this is “seven billion billion billion.” Of this, almost 2/3 is hydrogen, 1/4 is oxygen, and about 1/10 is carbon. These three atoms add up to 99% of the total!