The charge of b is +3 and the charge of o is -2. what is its formula?

a) b3o2

b) b2o3

c) o2b3

What is the maximum number of electrons that an atomic orbital can contain?

Which of the following units is not an official si unit? mole liter kilogram ampere

Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.