What is the atomic number for helium?

Answer: The nucleus of the helium atom contains 2 massive, positively charged particles. Thus, Z , the atomic number = 2 . read more

The atomic number of helium can be found on the periodic table; it is the number written above the elements abbreviation. Helium's abbreviation is He and is the second element on the periodic table. Therefore, Helium's atomic number is 2. read more

Helium (from Greek: ἥλιος, translit. Helios, lit. 'Sun') is a chemical element with symbol He and atomic number 2. It is a colorless, odorless, tasteless, non-toxic, inert, monatomic gas, the first in the noble gas group in the periodic table. Its boiling point is the lowest among all the elements. read more