Ittrium silih tunggil datu kimia antuk simbolY miwah wilangan atom 39. Punika logam transisi mawarna logam masawang pérak antuk sacara kimiawi sekadi lantanida miwah ketah kaklasifikasiyang dados "datu tanah langka".[5] Itrium ketah katemuin ring campuhan sareng datu lantanida ring datu tanah langka, miwah tan naénin katemuin ring palemahan dados datu bébas. 89Y punika wantah asiki isotop sané tegtteg, miwah dados asiki isotop sané katemuin ring kerak gumi.
↑Yttrium and all lanthanides except Ce and Pm have been observed in the oxidation state 0 in bis(1,3,5-tri-t-butylbenzene) complexes, see Cloke, F. Geoffrey N. (1993). "Zero Oxidation State Compounds of Scandium, Yttrium, and the Lanthanides". Chem. Soc. Rev. 22: 17–24. doi:10.1039/CS9932200017. and Arnold, Polly L.; Petrukhina, Marina A.; Bochenkov, Vladimir E.; Shabatina, Tatyana I.; Zagorskii, Vyacheslav V.; Cloke (2003-12-15). "Arene complexation of Sm, Eu, Tm and Yb atoms: a variable temperature spectroscopic investigation". Journal of Organometallic Chemistry. 688 (1–2): 49–55. doi:10.1016/j.jorganchem.2003.08.028.