Atoms & periodic table

123456
Across
  1. 3. number 1 in periodic table
  2. 5. number indicates number of protons in an atom
  3. 6. Number 5 in the periodic table
Down
  1. 1. neutral charge
  2. 2. positive charge
  3. 4. negative charge
  4. 5. mass indicates how many neutrons and protons an atom has