helium

Significat (Anglès)

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.

Conceptes

heli

número atòmic 2

Sinònims

He

👨

atomic number 2

limnodium

swamp community

Traduccions

hélium

Helium

helio

elio

hélio

helium

helyum

helium

ήλιο

هيليوم

eli

hêlyûm

helyûm

èli

Pronunciat com a (IPA)

/ˈhiː.li.əm/

Etimologia (Anglès)

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.