24.1 D-Block Elements Flashcards
Where are the d block elements found?
Between group 2 and group 13 of the periodic table
Typical properties of d block elements
High MP and BP
Shiny
Conduct electricity and heat
Uses of Copper
Coins
Electrical cables
Water pipes
Uses of Zinc and Nickel
Coins
Uses of Titanium
Aerospace industry
Joint replacement
Cosmetic dentistry
Uses of Iron
Construction
Production of tools
4s and 3d subshell
3d subshell has greater energy
4s orbital fills first
4s orbital empties first
Transition elements
D block elements that form at least one ion with a partially filled d orbital
D block elements that are not transition elements
Zinc
Scandium
Ion formed by Scandium
Sc3+
Ion formed by Zinc
Zn2+
Properties of transition elements
Can have different oxidation states
Form coloured compounds
Elements and compounds can act as catalysts
Oxidation states across transition elements
Increases until Manganese and then decreases
Which ion do all transition elements form?
2+
Potassium Dichromate (VI) colour
Bright orange
Cobalt (II) Chloride colour
Pink-purple
Hydrated Copper (II) Sulfate colour
Blue
Iron (II) colour
Pale green
Iron (III) colour
Yellow
Cr (III) colour
Green
Cr (VI) colour
Yellow or orange
Haber process & catalyst
N2 + 3H2 >< 2NH3
Iron
Contact process & catalyst
2SO2 + O2 >< 2SO3
Vanadium (V) Oxide, V2O5
Hydrogenation catalyst
Nickel
Decomposition of Hydrogen Peroxide & catalyst
2H2O2 > 2H2O + O2
Manganese (IV) Oxide MnO2
Heterogeneous catalyst
Catalyst is a different state to the reactants
Homogeneous catalyst
Catalyst is the same state as the reactants
What catalyses the reaction between zinc and acids?
Cu2+ ions
