Question

Iron is a transition element.
which of the following statements about transition elements are correct? Choose three.
a) The metals are highly colored (blue, yellow, green)
b) The metals have low melting points.
c) Their compounds are often highly colored.
d) Their compounds are colorless.
e) The elements and their compounds are often used as catalysts
f) They have more than one oxidation state.

Answer 1

Answer:

They have more than one oxidation state