general

Question 1

colour of Cu 3+ ions

Answer 1

green/blue

Question 2

colour of Cr2O7

Answer 2

orange

Question 3

colour of Cu 2+ in solution

Answer 3

blue

Question 4

colour of NO2 gas

Answer 4

brown

Question 5

fluorine gas colour

Answer 5

yellow

Question 6

chlorine gas colour

Answer 6

green

Question 7

bromine liquid colour

Answer 7

orange

Question 8

iodine solid colour

Answer 8

grey

Question 9

iodine gas colour

Answer 9

purple

Question 10

ligand

Answer 10

an ion or molecule (functional group) that binds to a central metal atom to form a coordination complex ( bonding with the metal generally involves donation of one or more of the ligand’s electron pairs)