International Union of Pure and Applied Chemistry

Division VIII Chemical Nomenclature and Structure Representation Division

Nomenclature of Organic Chemistry. IUPAC Recommendations and Preferred Names 2013.

Prepared for publication by Henri A. Favre and Warren H. Powell, Royal Society of Chemistry, ISBN 978-0-85404-182-4

Appendix 1

Seniority list of elements and ‘a’ terms used in skeletal replacement (‘a’) nomenclature, in decreasing order of seniority

Element	‘a’ Term
F	fluora
Cl	chlora
Br	broma
I	ioda
At	astata
O	oxa
S	thia
Se	selena
Te	tellura
Po	polona
Lv	livermora
N	aza
P	phospha
As	arsa
Sb	stiba
Bi	bisma
C	carba
Si	sila
Ge	germa
Sn	stanna
Pb	plumba
Fl	flerova
B	bora
Al	alumina
Ga	galla
In	inda
Tl	thalla
Zn	zinca
Cd	cadma
Hg	mercura
Cn	copernica
Cu	cupra
Ag	argenta
Au	aura
Rg	roentgena
Ni	nickela
Pd	pallada
Pt	platina
Ds	darmstadta
Co	cobalta
Rh	rhoda
Ir	irida
Mt	meitnera
Fe	ferra
Ru	ruthena
Os	osma
Hs	hassa
Mn	mangana
Te	techneta
Re	rhena
Bh	bohra
Cr	chroma
Mo	molybda
W	tungsta
Sg	seaborga
V	vanada
Nb	nioba
Ta	tantala
Db	dubna
Ti	titana
Zr	zircona
Hf	hafna
Rf	rutherforda
Sc	scanda
Y	yttra
La	lanthana
Ce	cera
Pr	praseodyma
Nd	neodyma
Pm	prometha
Sm	samara
Eu	europa
Gd	gadolina
Tb	terba
Dy	dysprosa
Ho	holma
Er	erba
Tm	thula
Yb	ytterba
Lu	luteta
Ac	actina
Th	thora
Pa	protactina
U	urana
Np	neptuna
Pu	plutona
Am	america
Cm	cura
Bk	berkela
Cf	californa
Es	einsteina
Fm	ferma
Md	mendeleva
No	nobela
Lr	lawrenca
Be	berylla
Mg	magnesa
Ca	calca
Sr	stronta
Ba	bara
Ra	rada
Li	litha
Na	soda
K	potassa
Rb	rubida
Cs	caesa
Fr	franca
He	hela
Ne	neona
Ar	argona
Kr	kryptona
Xe	xenona
Rn	radona

Continued with Appendix 2 Detachable Prefixes Used for Substitutive Nomenclature.

Return to:
IUPAC Chemical Nomenclature home page.
Blue Book home page.