Many metals pack in cubic unit cells. The density of a metal and length of the unit cell can be used to determine the type for packing. For example, platinum has a density of 21.45g/cm3 and a unit cell side length a of 3.93 Å. (1 Å = 1. 10-8 cm.)
A) How many platinum atoms are in exactly 1 cm3?
B) How many unit cells are in exactly 1 cm3?
C) How many platinum atoms are there per unit cell?
D) The atoms/unit cell suggests that platinum packs as a unit cell.
E) What is the atomic radius of platinum?

- "the acute form of diverticulitis can manifest itself with one or more severe attacks of infection and inflammation.

the inflammation of diverticulitis can eventually result in a bowel obstruction, which may cause constipation, thin stools, diarrhea, abdominal swelling or bloating, and abdominal pain."

"the periodic table is arranged in order of atomic number."

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.