transition elements Flashcards
what is a transition element
d-block elements that form at least one ion with a partailly filled d-orbital
dblock but not trans (2)
- scandium
- zinc
cr3+ metal aqua ion
violet soloution
[Cr(H2O)6] 3+
Fe 2+ metal aqua ion
Green solution
[Fe(H2O)6] 2+
Fe 3+ metal aqua ion
yellow
[Fe(H2O)6] 3+
mn2+ metal aqua ion
pale pink soloution
[Mn(H2O)6] 2+
cu 2+ metal aqua ion
Blue solution
[Cu(H2O)6] 2+
cr3+ with oh -
Green precipitate
Cr(OH)3(H2O)3
fe2+ with oh-
Green precipitate
Fe(OH)2(H2O)4
fe3+ with oh -
Brown precipitate
Fe(OH)3(H2O)3
mn2+ with oh -
Pale brown precipitate
Mn(OH)2(H2O)4
cu2+ with oh -
Blue precipitate
Cu(OH)2(H2O)4
cr3+ and excess oh-
Green solution
[Cr(OH)6]3
fe2+ and excess oh-
No change
fe3+ and excess oh-
No change
mn2+ and excess oh-
No change
cu2+ and excess oh-
No change
cr3+ with nh3
Green precipitate
Cr(OH)3
(H2O)3
fe2+ with nh3
Green precipitate
Fe(OH)2
(H2O)4
fe3+ with nh3
Brown precipitate
Fe(OH)3
(H2O)3
mn2+ with nh3
Pale brown precipitate
Mn(OH)2
(H2O)4
cu3+ with nh3
Blue precipitate
Cu(OH)2
(H2O)4
cr3+ with nh3 excess
Purple solution
[Cr(NH3
)6
]
3+
fe2+ with nh3 excess
No change
