|
 Used in Blimps and Balloons |
Properties |
|---|
| Symbol | Name | Atomic Number | Atomic Weight | Group Number |
|---|---|---|---|---|
| He | helium | 2 | 4.002602 (2) | 18 |
Standard State: gas at
298 K
Color: colorless
Helium is the second most abundant element in the universe after hydrogen. Helium is mainly used for small party balloons. Breathing in helium causes your voice to become high pitched, but this condition lasts a short period.