Unit Test — Unit test Answers

Who reported four “element” classifications, but included some substances that were combinations of elements rather than true elements in his listing?

Which element has an ion that is smaller than an ion of calcium?

Which scientist’s law about the ratios of masses of elements in a compound did John Dalton’s work on the atomic structure help to explain?

Which physical method can separate a mixture of steel ball bearings and marbles?

What is the electron configuration of chlorine (Cl)?

What is the predicted order of first ionization energies from highest to lowest for lithium (Li), sodium (Na), potassium (K), and rubidium (Rb)?

The symbol for xenon (Xe) would be a part of the noble gas notation for the element

Which diagram best illustrates the atomic model that Rutherford derived from his gold foil experiment?

How many electrons can the n = 4 shell hold?