24 Transition Elements

Question 1

What is a transition metal

Answer 1

D- block element that forms at least one ion with an incomplete d-sub shell

Question 2

Which elements are not transition metals and why?

Answer 2

Sc : Sc 3+ has no d-sub shells

Zn : Zn 2+ has full d-sub shells

Definition of transition metal: ion needs incomplete d-subshell

Question 3

Which elements have weird electron configuration?

Answer 3

Cr : 3d5 4s1
Cu : 3d10 4s1

Half filled or full d-subshell offer more stability than a full s-subshell

Question 4

Factors effecting colours

Answer 4

-Size and type of ligands -coordination number
-Strength of metal-ligand bonds -oxidation number
-complex shape. -transition element

Question 5

Complex ion

Answer 5

The transition metal ion

Question 6

Ligand

Answer 6

Molecule or ion, that can donate a pair of electrons to the TM ion

Question 7

Coordinate bonds

Answer 7

One of the bonded atoms provides both electrons for the shared pair