Bohr's model of the atom included a positively charged orbited by negatively charged
a. nucleus, protons
b. nucleus, electrons
c. neutrons, electrons
d. protons, electrons

Matches the chemical name of each oxide of phosphorus to its chemical formula

1)each group 16 element has how many valence electrons? ( )4 ( )6 ( )8 ( )16 2)how many dots appear in the dot structure for calcium ion, ca2+? ( )zero ( )one ( )two ( )eight 3) which of the following atoms forms a cation to obtain an octet of outer shell electrons? ( )magnesium ( )oxygen ( )fluorine ( )helium 4) an al3+ ion contains 13 protons and 10 electrons. ( )true ( )false 5) valence and non-valence electrons are represented in lewis dot structures. ( )true ( )false

Connect the whole numbers on the periodic table to indicate what they represent?