The number of atoms in this is not important as long as all of the atoms are of the same type

11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg

Compare and contrast the bohr model and the electron cloud models of the atom.

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled