Helium (He) Element Information - Atomic Number 2, Symbol & Properties #3301693 (License: Personal Use)

This stylized periodic table tile represents helium (He), the second lightest and second most abundant element in the observable universe. With atomic number 2 and standard atomic weight 4.0026, helium is a colorless, odorless, non-toxic noble gas known for its extremely low boiling point and inertness. It plays critical roles in cooling superconducting magnets, pressurizing rocket fuel tanks, and enabling deep-sea diving gas mixtures.

Used on educational websites, chemistry resources, or science blogs to illustrate elemental data; matches user intent for quick reference, homework help, or科普 content about noble gases.