One bit of evidence that the present theory of atomic structure is "correct" lies in the magnetic properties of matter. atoms with unpaired electrons are attracted by magnetic fields and thus are said to exhibit paramagnetism. the degree to which this effect is observed is directly related to the number of unpaired electrons present in the atom. on the basis of the electron orbital diagrams for the following elements, indicate which atoms would be expected to be paramagnetic, and tell how many unpaired electrons each atom contains. a. phosphorus, z = 15b. iodine, z = 53c. germanium, z = 32

In a sample of oxygen gas at room temperature, the average kinetic energy of all the balls stays constant. which postulate of kinetic molecular theory best explains how this is possible? a. attractive forces between gas particles are negligible because the particles of an ideal gas are moving so quickly. b. collisions between gas particles are elastic; there is no net gain or loss of kinetic energy. c. gases consist of a large number of small particles, with a lot of space between the particles. d. gas particles are in constant, random motion, and higher kinetic energy means faster movement.

Which terms are used to identify pure substances

How many moles of oxygen react with 12 moles of aluminum