Question

What is a monoatomic gas?

Answer 1

Monoatomic gasses do not have atoms bounded together like most gasses. They consist of single atoms, it does not has vibrations or rotations, and does not contain characteristics of polyatomic gasses. The only mode of movement is translation, and some examples of monoatomic gasses include helium and sodium vapor.

Answer 2

is He2 a monatomic gas?

Answer 3

No, it is a diatomic gas. He2 has more than one atom bonded together, making it only monoatomic at room temperature.

Answer 4

http://en.wikipedia.org/wiki/Monatomic_gas

Answer 5

all noble gases are monatomic...

Answer 6

Yes, He is a monatomic gas, but He2 consists of two of the same elements, making it diatomic. The same would be the case with O, O is a monoatomic gas, but O2 is not, because it has two of the same elements, it makes it diatomic.

Answer 7

Mono means one, Dia means two.

Answer 8

hmm... okay..

Answer 9

ty.

Answer 10

Monatomic gas is a combination of the words "mono" and "atomic," and means "single atom." It is usually applied to gases: a monatomic gas is one in which atoms are not bound to each other. All chemical elements will be monatomic in the gas phase at sufficiently high temperatures.
Reference: http://goo.gl/4JRQf6