Transition metals

Question 1

V2 +

Answer 1

VIOLET

Question 2

V3 +

Answer 2

GREEN

Question 3

TI2 +

Answer 3

PURPLE

Question 4

Ti 3+

Answer 4

PURPLE

Question 5

VO 2+

Answer 5

BLUE

Question 6

VO2 +

Answer 6

YELLOW

Question 7

Cr 3+

Answer 7

VIOLET
BUT IN SOLUTION IS GREEN

Question 8

Cr2O7 2-

Answer 8

ORANGE

Question 9

MnO4 -

Answer 9

PURPLE

Question 10

MnO4 2-

Answer 10

GREEN

Question 11

Mn 2+

Answer 11

PALE PINK

Question 12

Fe 2+

Answer 12

PALE GREEN

Question 13

Fe 3+

Answer 13

YELLOW

Question 14

Co 2+

Answer 14

PINK

Question 15

Ni 2+

Answer 15

GREEN

Question 16

Cu 2+

Answer 16

PALE BLUE

Question 17

Transition element definition

Answer 17

d-block element that has an incomplete d-subshell as a stable ion

Question 18

What are the 4 properties of d-block elements

Answer 18

form complex ions
form coloured compounds
good catalysts
have variable oxidation states

Question 19

Which 2 d-block elements aren’t transition elements and why

Answer 19

Sc 3+ –> no d subshell

Zn2+ –> full d subshell

Question 20

What are the exceptions of the 4 S subshell - which elements and why

Answer 20

Cr- 3d orbitals will have 1 electron in each orbital to make it more stable

Cu - full d subshell to make it more stable ( takes 1 electron from te 4S subshell

Question 21

Which 2 catalysts have health issues and what health issues are attached with them

Answer 21

Cu- cause chronic liver damage

Mn - psychiatric problems

Question 22

Catalyst used in hydrogen production and its oxidation state

Answer 22

Zn + H2SO4 –> ZnSo4 + H2

Cu2+ –> 2+ oxidation state

Question 23

Catalyst used in hydrogen peroxide decomposition

Answer 23

2H2O2 –> 2H2O + O2

MnO4 –> 4+ oxidation state

Question 24

state 2 different elements that have variable oxidation states

Answer 24

Fe 3+ and Fe2+

V2+ and V3+

Question 25

Ligand defintion

Answer 25

molecule or ion that can form a coordinate bond with a central metal ion by donating its lone pairs of electrons

Question 26

State examples of both monodentate and bidentate ligands

Answer 26

monodentate: H2O, Cl – and NH3
bidentate: NH2CH2CH2NH2

Question 27

What are optical isomers

Answer 27

Non- super imposable images
3 bidentate ligands
octahedral shape

Question 28

What’s the significance of cis-platin
evaluate

Answer 28

[Pt(NH3)2(Cl)2]

Bonds to the nitrogen on guanine in a ligand substitution reaction -> displacing the Cl ligand.
It disrupts the DNA and prevents replicating

BUT –> can bind to healthy cells which have negative side effects