d-block

• D Block

  Elements found within groups 3-12 on the periodic table, with valence electrons in the d orbital
• 1. Block


  • Transition Metals
  • d-orbital has a magnetic quantum number of (-2,-1,0,1,2), thus 5 d-orbitals
  • Can hold 10 electrons
• Electron Configuration

  • Typically follow the pattern of (n-1)d1-10ns1-2
  • The inward d-orbitals can have up to 10 electrons
  • The ns orbital can have up to 2 electrons
• Electron Configuration Example

  • Ag (Silver) - [Kr]5s14d10
• Characteristics:

  • Higher density
  • High melting point due to its ionization enthalpy
  • High atomic and ionic radii
  • Can form metallic bonds and show metallic properties due to unpaired d-electrons
  • Can form stable complexes
  • Commonly used as catalysts