atomic_number_9 (HyperDic hyper-dictionary)

English > 1 sense of the expression *atomic number 9*:
NOUN	substance	atomic number 9, fluorine, F	a nonmetallic univalent element belonging to the halogens

English > *atomic number 9*: 1 sense > noun 1, substance
Meaning	A nonmetallic univalent element belonging to the halogens; usually a yellow irritating toxic flammable gas; a powerful oxidizing agent; recovered from fluorite or cryolite or fluorapatite.
Synonyms	fluorine, F
Broader	chemical element, element	Any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
	gas	A fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely
	halogen	Any of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions
Substance of	cryolite, Greenland spar	A white mineral consisting of fluorides of aluminum and sodium
	fluorapatite	A form of apatite in which fluorine predominates over chlorine
	fluorite, fluorspar, fluor	A soft mineral (calcium fluoride) that is fluorescent in ultraviolet light
Spanish	flúor, número atómico 9
Catalan	fluor, número atòmic 9

HyperDic: atomic_number_9