The molecule formula P2O5 means that a. A molecule contains 2 atoms of P and 5 atoms of O
b. The ratio of the mass of P to the mass of O in the molecule is 2:5
c. There are twice as many P atoms in the molecule as there are O atoms
d. The ratio of the mass of P to the as of O in the molecule is 5:2

Which of the following observations indicates that an atom has neutrons? some uncharged particles are scattered by a beryllium atom when it hits a gold foil. some uncharged particles bounce back from a gold foil when it is bombarded with alpha particles. a radiation consisting of uncharged particles is emitted when alpha particles strike beryllium atoms. a radiation which attracts electrons is produced when a beryllium atom is bombarded with alpha particles.