Reaction of terbium with acidsTerbium dissolves readily in dilute sulphuric acid, forming a very pale pink solution of Tb(III) ions and hydrogen gas, H2.
2 Tb(s) + 3 H2SO4(aq) ![]() Reaction of terbium with airTerbium tarnishes slowly in air and burns readily, forming terbium oxides (no reference to composition yet).
Reaction of terbium with halogensTerbium reacts with the halogens, forming the corresponding terbium(III) halides:
2 Tb(s) + 3 F2(g) ![]() 2 Tb(s) + 3 Cl2(g) ![]() 2 Tb(s) + 3 Br2(g) ![]() 2 Tb(s) + 3 I2(g) ![]() Reaction of terbium with waterTerbium reacts slowly with cold water, and quickly with hot water, forming terbium(III) hydroxide, Tb(OH)3, and hydrogen gas, H2
2 Tb(s) + 6 H2O(l) ![]() |