Transition metals Flashcards
1
Q
what is a transition metal?
A
d-block elements that form one or more stable ions with incompletely-filled d-orbitals
2
Q
how many electrons can a d-subshell hold
A
10
3
Q
what subshell is filled before 3d and why?
A
4s because it has a lower energy level
4
Q
why do electrons pair up singly?
A
so they don’t repel
5
Q
what is a ‘ligand’?
A
a molecule or ion that forms a dative bond with a transition metal by donating a pair of electrons to the bond
6
Q
why do transition metals show a variable oxidation number?
A
7
Q
A
8
Q
A
