Answers

2016-03-24T22:21:45+05:30
Transition metals have more than one valencies. Copper or Iron for example are transition metals,copper 1 or 2 and Iron 2 or 3. They form colorful salts or compounds, such as Copper sulphate is blue,have catalytic properties, Iron used as catalyst in Haber process and have high melting point, boiling point and densities. 
1 5 1
Please mark it brainiest answer...............................Please