24.1 d-block elements Flashcards
which orbital do d-block elements have their highest electron in?
d orbitals
what are the properties of d-block elements?
they are metallic
high melting point
shiny
conduct electricity
which d-block elements have a different electron configuration?
chromium
copper
why do chromium and copper have a different electron configuration?
an electron from it’s 4s orbital is given to the 3d orbital for stability
what is the order of losing electrons in d-block elements?
the 4s is emptied first
then the 3d
what is the order of gaining electrons in d-block elements?
the 4s is filled first
then the 3d
what is a transition element?
d-block elements that forms at least one ion with a PARTIALLY filled d-orbital
which elements are d-block elements but not transition metals?
Scandium
Zinc
what ion does Sc form?
3+
what is the electron configuration of Sc3+?
1s2 2s2 2p6 3s2 3p6
why is Scandium not a transition metal?
because it’s d-orbitals are empty as they have no electrons
therefore it’s d orbitals are not partially occupied so it cannot be a transition metal
what ion does Zn form?
2+
what is the electron configuration of Zn2+?
1s2 2s2 sp6 3s2 3p6 3d10
why is Zinc not a transition metal?
it has fully occupied d orbitals
therefore it’s d orbitals are not partially occupied so it cannot be a transition metal
what are the properties of transition metals?
- form compounds with different oxidation states
- form coloured compounds
- can act as catalysts
