Transition Metals Flashcards
1
Q
what are d-block elements
A
they fill the d subshell with their outer electrons
2
Q
what is unusual about the order orbitals fill in most d-block elements
A
you fill the 4s subshell before the 3d subshell
3
Q
which is the lower energy orbital 3d or 4s
A
4s
4
Q
define a transition metal
A
one which forms one or more stable ions which have incompletely filled d-orbitals
5
Q
why is it easy to oxidise fe2 and fe3
A
half full subshell
6
Q
define a complex ion
A
a metal ion surrounded by coordinately bonded ligands
7
Q
what is a ligand
A
molecules which surround and are bonded to the central atom by donating a lone pair of electrons
8
Q
what bonds do ligands form
A
dative coordinate bonds
9
Q
which molecules form a square planar
A
Ni
Pt
Palladium 2
Gold 3
