On the periodic table, why is osmium most dense?

The number of neutrons is equal to the atomic number minus the atomic mass. a. true b. false

Which substance is a steroid? cholesterol fatty acid monosaccharide trans fat

Which statement best summarizes the importance of ernest rutherford’s gold foil experiment? it proved that all of john dalton’s postulates were true. it verified j. j. thomson’s work on the atomic structure. it showed that an electron circles a nucleus in a fixed-energy orbit. it showed that a nucleus occupies a small part of the whole atom.