im not sure but i think thats because its only made up of one thing. its in the Periodic Table
It is a element
Helium is an element. It is a noble gas. It is in the 18th period.
Helium is a gas, except at extremely cold temperatures.
Helium is an element
No, helium inside a balloon is not a compound. Helium is a chemical element and is the second lightest element on the periodic table. It exists as individual helium atoms inside the balloon.
It is a element
Helium is an element and not a compound or mixture.
It is a element
Helium is an element.
Neither. Helium is an element
It is a element
Helium is an element. It is in the 18th group of the periodic table. It is a noble gas.
Neither. Helium is a noble gas mono atomic element.
Helium is an element. It is a noble gas. It is in the 18th period.
Helium is an element not a mixture.
Helium is a gas, except at extremely cold temperatures.
Helium is not a compound, it is an element.