INORGANIC CHEMISTRY TEST 1

Element A is located in period 3 of the periodic table and is found to have four valence electrons. Identify element A.

• Aluminium

• Silicon

• Germanium

• Phosphorus

State the set of FOUR (4) quantum numbers for the second electron in the valence shell of element Si.

• n= 2

  l= 0

  ml= 0

  ms= -1/2

• n= 3

  l= 0

  ml= 0

  ms= +1/2

• n= 2

  l= 1

  ml= -1

  ms= -1/2

• n= 3

  l= 1

  ml= -1

  ms= -1/2

Based on the electronic configuration notation given, write FOUR (4) quantum number for the electron in the circle

• n = 2

  l = 1

  ml = -1

  ms = -1/2

• n = 2

  l = 1

  ml = -1

  ms = +1/2

• n = 2

  l = 1

  ml = 0

  ms = +1/2

• n = 2

  l = 1

  ml = 0

  ms = -1/2

Based on the electronic configuration notation given, write FOUR (4) quantum number for the valence electron.

• n = 2

  l = 1

  ml = +1

  ms = -1/2

• n = 2

  l = 0

  ml = 0

  ms = -1/2

• n = 3

  l = 0

  ml = 0

  ms = +1/2

• n = 3

  l = 0

  ml = 0

  ms = -1/2

Based on the FOUR (4) sets of quantum number given,  

 Write the electronic configuration using noble gas spdf.

• [Kr] 3s² 3p⁵

• [Ne] 3p⁵

• [Ar] 4s² 4p⁵

• [Ne] 3s² 3p⁵