Practice: According to the table above, how many electrons are required to produce a charge of –2.0 C?
The atom is composed of 3 subatomic particles: neutrons, protons, and electrons.
In terms of size, neutrons are the largest, protons are slightly smaller, and the electrons are the smallest.
Concept #1: The 3 subatomic particles share key differences and similarities in their masses and charges.
Example #1: Osmium, one of the densest elements on earth, has an actual mass of 190.23 grams. According to the table above, what is its value in terms of atomic mass units?
Practice: According to the table above, how many electrons are required to produce a charge of –2.0 C?
Practice: If the charge and mass of one proton is 1.60218 x 10-19 C and 1.673 x 10-30 g respectively, what is the charge of 378 kg of protons?
