Periodic Table Vocabulary Crossword

the horizontal sections on the periodic table.
the sections that run vertically on the periodic table.
the most reactive family of elements.
reacts best with the Alkali; have 7 valence electrons.
groups of elements that have the same number of valence electrons and similiar properties.
number of electrons in the outer shell of an atom.
the family of elements that does not react with anything else; have 8 valence electrons.
an element that gets electrically charged after it reacts with something else.
particles that have no charge.
the number of protons in an atom.
every element to the left of the staircase line; hard; shiny; can easily conduct electricity.
a model that shows the number of protons and neutrons in the nucleus of an atom, the number of shells the atom has, and the number of electrons in each orbital.
the way the elements are sorted.
family of elements with the numbers 57 to 71.
a family of elements that are the numbered on the periodic table from 83 to 103.
2nd most reactive family on the periodic table; have 2 valence electrons.
the family of elements that touch the staircase line.
the element family with no metals in it.
the path electrons move in around the nucleus of the atom.