Gold has a fcc lattice with edge length $407$ $\mathrm{p}\mathrm{m}$ . The diameter of the gold atom is

• A

  $303.1$ $\mathrm{p}\mathrm{m}$
• Correct answer
  B

  $287.8$ $\mathrm{p}\mathrm{m}$
• C

  $352.5$ $\mathrm{p}\mathrm{m}$
• D

  $576.6$ $\mathrm{p}\mathrm{m}$

Hence, the correct answer is option: 'B'.