The molecular geometry is trigonal bipyramidal.
The dark side your welcome
Answer:
The ratio of the number of atoms of gold and silver in the ornament is 197 : 1080.
Explanation:
Let the mass of silver ornament be x.
Mass of gold polished on an ornament = 1% of x= 0.1 x
Moles of silver =
Number of atoms = 
Where :
= Avogadro number
Moles of gold =
Silver atoms =
Gold atoms =
The ratio of the number of atoms of gold and silver in the ornament:

= 197 : 1080
Per hour-68x60=4080
Per day-4080x24=97920
Per week-97920x7=685440