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atomic number 15 |
atomic number 16 |
atomic number 17 |
atomic number 18 |
atomic number 19 |
atomic number 2
| atomic number 20
| atomic number 21
| atomic number 22
| atomic number 23
| atomic number 24
atomic number 2
WORDNET DICTIONARY
Noun atomic number 2 has 1 sense
- atomic number 2(n = noun.substance) he, helium - a very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in Texas and Kansas); Array is a kind of chemical element, element, argonon, inert gas, noble gas
For further exploring for "atomic number 2" in Webster Dictionary Online
