Tranistion Metals

Question 1

Define transition metals

Answer 1

Element with an incomplete d sub level in atoms or ions

Question 2

What are the characteristics of transition metals

Answer 2

• complex formation
  -formation of coloured ions
  -variable oxidation states
  -catalytic activity

Question 3

Why is zn not a transition metal ?

Answer 3

Zinc can only form +2 ions
In this ions it contains a complete d orbital

Question 4

Define complex

Answer 4

Is a central metal ion surrounded by ligands

Question 5

Define ligand

Answer 5

An atom ,iron or molecule which can donate a lone electron pair

Question 6

Which electron do transition metals lose first when forming ions ?

Answer 6

4s

Question 7

How is coordinate bonding involved in transition metals

Answer 7

-Involved in complex formation
-When the Shared pair of electrons in the covalent bond come from only one of the bonding atoms

Question 8

Define co-ordinate number

Answer 8

The number of co-ordinate bonds the metal ion has formed to surrounding ligands

Question 9

What are the 3 types of ligands

Answer 9

-monodentate
-bidentate
-multidentate

Question 10

Define monodentate and give some examples I

Answer 10

-ligand that forms one co-ordinate bond to the central metal ion
-donates one lone pair

-Cl’ , H2O , NH3 , CN’

Question 11

Define the term bidentate ligand and give some examples

Answer 11

• A ligand that forms two co-ordinate bonds to the central metal ion
  -donates 2 line pairs

-ethanedioate
-benzene-1 , 2-diol
-ethane-1,2-diamine

Question 12

Define multidentate ligand

Answer 12

-A ligand that forms 3 or more co-ordinate bonds to the central metal ion
-EDTA^4’
Has 6