Question

formula of helium gas

Answer 1

He-helium 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.

Answer 2

•...• Answer:-${2} {he}^{4}$
here 2 is the number of proton will 4 is the mass

Hope u got it