Question

what is hiliyam define​

Answer 1

Answer:

Explanation:

Helium is a chemical element with the 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.

Symbol: He

Atomic mass: 4.002602 u

Atomic number: 2

Electron configuration: 1s2

Electrons per shell: 2

Answer 2

Helium :

• the chemical element of atomic number 2, an inert gas which is the lightest member of the noble gas series.