Group VIII & Group VIII A Flashcards
The iron triad
Iron (Fe), Cobalt (Co), Nickel (Ni)
Light platinum metals
Ruthenium (Ru), Rhodium (Rh), Palladium (Pd)
Heavy platinum metals
Osmium (Os), Iridium (Ir), Platinum (Pt)
Where can ores of cobalt and nickel obtained
sulfide ores
What is pyrite similar to
gold and is also called as “fool’s gold”
Chief source of iron in industry
Hematite (fe[2]O[3])
Pyrite formula
FeS[2]
outer configuration of the iron triad
partially filled 3d orbitals and 4s^2
the iron triad react with active nonmetals like ?
hydrogen, sulfur, and oxygen
iron triad oxidation state in compounds
+2, +3
what must be lost in the formation to form a trivalent ion
3d electron
what must be lost in the formation to form a divalent ion
4s electrons
what does the lost of 4s electron form?
divalent ions
what makes the iron triad unique
their magnetic properties; they possess this at room temp
what does the lost of 3d electron form?
trivalent ions
a weak base from the iron triad
iron (III) hydroxide
the platinum metals are good catalysts when ?
hydrogen is involved
the heaviest known substance
Osmium (Os)
what are the noble metals
platinum metals, silver, gold, and mercury
Properties of all group VIII elements
grayish-white metals with high melting and boiling points
what year was inert compounds reported
1960s
The inert gases
Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), Radon (Rn)
why are noble gases inactive
they have a stable configuration
what are the inert compounds
compounds of xenon (Tetrafluoride and hexafluoride)
