A) Ni(SO4)2
B) NiSO4
C) NiSO4(H2O)6
D) NiSO4(H2O)7

A) Blue
B) Turquoise
C) White
D) Yellow

A) 100,000
B) 40,000
C) 10,000
D) 5,000

A) 0.0 and 30.7 °C
B) 30.7 and 53.8 °C
C) 50.0 and 70.0 °C
D) 20.0 and 40.0 °C

A) Yellow
B) Green
C) Blue
D) Turquoise

A) Above 1000 °C
B) Above 640 °C
C) Above 330 °C
D) Above 100 °C

A) 640 °C
B) 1210 °C
C) 330 °C
D) 53.8 °C

A) Heating the hydrates above 330 °C
B) Exposure to air
C) Cooling the heptahydrate
D) Reacting with sulfuric acid

A) Ferromagnetic
B) Diamagnetic
C) Non-magnetic
D) Paramagnetic

A) Nickel oxide
B) Nickel carbonate
C) Nickel sulfate
D) Ammonium sulfate

A) By-product of copper refining
B) Natural mining of retgersite
C) Atmospheric deposition
D) Laboratory synthesis from iron

A) Nickel heptahydrate
B) Nickel carbonate
C) Nickel ammonia complex
D) Nickel oxide

A) Morenosite
B) Dwornikite
C) Retgersite
D) Nickelhexahydrite

A) Tetragonal hexahydrate
B) Morenosite
C) Dwornikite
D) Nickelhexahydrite

A) Nickelhexahydrite
B) Dwornikite
C) Retgersite
D) Morenosite

A) Retgersite
B) Morenosite
C) Nickelhexahydrite
D) Dwornikite

A) 50.0%
B) 19.0%
C) 10.5%
D) 5.0%

A) Non-toxic substance
B) Inert compound
C) Human carcinogen
D) Developmental toxin

A) [Ni(H2NCH2CH2NH2)3]SO4
B) Ni(NH4)2(SO4)2
C) [Ni(NH3)6]SO4
D) [Ni(H2O)6]2+