5.3.1 Transition Elements Flashcards
1
Q
What is a transition element?
A
a d-block element that forms an ion with an incomplete d-subshell
2
Q
What are the three properties of a transition element?
A
- variable oxidation states
- formation of coloured ions
- effective catalysts
3
Q
Cu2+ is a…
A
blue solution
4
Q
Cu(OH)2 is a…
A
blue precipitate
5
Q
Fe2+ is a…
A
pale-green solution
6
Q
Fe(OH)2 is a…
A
green precipitate
7
Q
Fe3+ is a…
A
yellow solution
8
Q
Fe(OH)3 is a…
A
rusty brown precipitate
9
Q
Mn2+ is a…
A
pale pink solution
10
Q
Mn(OH)2 is a…
A
light brown precipitate
11
Q
Cr3+ is a…
A
violet solution
12
Q
Cr(OH)3 is a…
A
grey-green precipitate
13
Q
A complex ion is a _______ metal ion bonded to ________ ligands by ___________ bonds.
A
transition
one or more
coordinate
14
Q
A ligand is a molecule or ion that can ________ a pair of electrons to the transition metal ion to form a ___________ bond to a metal ion.
A
donate
coordinate
15
Q
A
