helium

Senso (Inglese)

1. (uncountable) The second-lightest chemical element (symbol He), with an atomic number of 2 and atomic weight of 4.002602, a colorless, odorless and inert noble gas.
2. (countable) A form or sample of the element.

Concetti

elio

sinonimi

He

👨

atomic number 2

limnodium

swamp community

Traduzioni

hélium

Helium

helio

hélio

helium

heli

helyum

ήλιο

helium

هيليوم

hêlyûm

eli

helyûm

èli

Pronunciato come (IPA)

/ˈhiː.li.əm/

Etimologia (Inglese)

From New Latin helium, from Ancient Greek ἥλιος (hḗlios, “sun”) (because its presence was first theorised in the Sun's atmosphere) with the suffix + -ium. Probably coined by Norman Lockyer. This suffix is unusual, because it is usually used only for metallic elements. It is likely that Lockyer, being an astronomer, was unaware of the usual chemical conventions.