5.3 Flashcards
1
Q
which is higher energy 4s or 3d
which fills first and which loses first
A
4s
2
Q
examples of d block elements that aren’t transition?
A
scandium, only forms 3+ ion with all d orbitals empty
zinc, only forms 2+ ion with all d orbitals full
3
Q
what’s a transition metal
A
d-block elements that form one or more stable ions with a partially filled d-subshell
4
Q
properties of transition metals
A
high densities, melting and boiling points
form coloured compounds
catalytic properties
5
Q
why are transition metals good catalysts
A
partially filled d orbitals can be used to form bonds with adsorbed reactants to help reactions to take place more easily
6
Q
A
