Yttrium

Chemical reactions


Reaction of yttium with acids


Yttrium metal dissolves readily in dilute hydrochloric acid, forming aquated Y(III) ions and hydrogen gas, H2.

2 Y(s) + 6 HCl(aq) 2 Y3+(aq) + 6 Cl(aq) + 3 H2(g)


Reaction of yttium with air


Yttrium tarnishes slowly in air and burns readily, forming yttrium (III) oxide, Y2O3

4 Y(s) + 3 O2(g) 2 Y2O3(s)


Reaction of yttium with halogens


Yttrium reacts with all the halogens, forming yttrium(III) halides.

2 Y(s) + 3 F2(g) 2 YF3(s)
2 Y(s) + 3 Cl2(g) 2 YCl3(s)
2 Y(s) + 3 Br2(g) 2 YBr3(s)
2 Y(s) + 3 I2(g) 2 YI3(s)


Reaction of yttium with water


Finely divided, or heated, yttrium dissolves in water, forming Y(III) ions and hydrogen gas, H2.

2 Y(s) + 6 H2O(g) 2 Y3+(aq) + 6 OH-(aq) + 3 H2(g)