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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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