Sulfur hexafluoride is an example of what?

Answer 1

Helium is a noble gas ('inert' gas) - a gas that will not react with other elements to form compounds. There are several elements like this - Helium, neon, argon, krypton, xenon and radon. The latter three do form some compounds but only with great difficulty. In the Periodic Table of elements helium and all the other noble gases are classed as group 0 (or sometimes group 8). Their atoms all have complete shells (energy levels) of electrons. Helium, like hydrogen, is lighter than air so if a balloon is filled with helium it will rise in the air. For this reason helium is often used in fairs when balloons that rise in the air are required, or it can also be used in airships as a replacement for hydrogen which is very flammable and explosive. Helium, being a noble gas, will not react with the oxygen in air, will therefore will not burn and so is much safer. Helium also affects the resonance in the mouth changing the quality of your voice. If you take a breath of helium gas, your voice temporarily sounds squeaky until the helium disperses and you once again fill up your lungs with air.

Answer 2

A noble gas, an element formed out of the big bang, an element first identified spectroscopically, the second most common element in the universe, a rare precious element (found only as a result of radioactive decay) on Earth, an element lighter than air, an element vital to medicine, industry and science that is being wasted in balloons.

Answer 3

No. Helium is a noble gas, like neon and argon. Halogen's are like fluorine, chlorine, etc.

Answer 4

Helium is an example of noble gas or an inert compound.

Answer 5

Binary Compound

Answer 6

Elements