1-Mercury is a poisonous metal that is used in thermometers. When mercury is at temperatures below its freezing point it has a simple cubic unit cell. How many atoms of Hg are present in each unit cell?
2-Nickel has a face-centered cubic unit cell. How many atoms of Ni are present in each unit cell?
3- Tungsten has a body-centered cubic unit cell. How many atoms of W are present in each unit cell?