Consider the elements lutetium through mercury. Identify:
i) If the elements are nonmetals, metalloids, or metals.
ii) The class of elements they belong.
iii) The subshell being filled with electrons in the series.

• A. i) nonmetals
  ii) representative elements
  iii) 2p
• B. i) metals
  ii) transition metals
  iii) 5d
• C. i) metals
  ii) representative elements
  iii) 6s
• D. i) metalloids
  ii) transition metals
  iii) 4f

Answer: (B)