atomic number 2 английский

Значение atomic number 2 значение

Что в английском языке означает atomic number 2?

atomic number 2

гелий (= 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)

Возможно, вы искали...