Chapter 24 - Transition Elements

Question 1

What are the physical properties of d block elements?

Answer 1

High melting and boiling points
Conduct electricity when solid and liquid
Insoluble in water

Question 2

What orbital is filled first, 4s or 3d?

Answer 2

4s

Question 3

What are the special cases of chromium and copper in terms of filling orbitals?

Answer 3

A half filled d5 sub-shell and a fully filled d10 sub-shell give additional stability to atoms of chromium and copper

Question 4

What happens to the orbitals of d-block elements when they turn into ions?

Answer 4

4s orbital empties before the 3d orbitals

Question 5

What is a transition element?

Answer 5

A transition element is a d-block element that forms at least one ion with a partially filled d-orbital

Question 6

What are some properties of transition elements?

Answer 6

They form compounds in which the transition element has different oxidation numbers
They form coloured compounds
The elements and their compounds can act as catalysts