Which of the following is true about the electron configurations of the
representative elements?
a the highest occupied s and p sublevels are completely filled.
b the highest occupied s and p sublevels are partially filled.

c the electrons with the highest energy are in an f sublevel.
od the electrons with the highest energy are in a d sublevel.

One or more substances changing into one or more substances is an example of a

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

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.