transition metals Flashcards
1
Q
what is the definition of a d-block element
A
an element with its highest energy electron in a d-orbital
2
Q
definition of transition element
A
a d block element that can form at least one ion with a partially filled d orbital
3
Q
what are the exceptions of transition metals
A
Zn
Sc
4
Q
why aren’t Zn or Sc defined as transition elements
A
as they don’t form an ion with a partially filled d orbital
Sc: [Ar] 4s² 3d1
Sc³+ : [Ar] —> has an empty d orbital
Zn: [Ar] 4s² 3d¹⁰
Zn²+ : [Ar] 3d¹⁰ —> has a full d orbital
5
Q
what is a ligand
A
a molecule which donates a lone pair to a central metal ion forming a coordinate bond
6
Q
what is a complex ion
A
a transition metal which is bonded to ligands by coordinate bonds
