Periodic Table

123456
Across
  1. 2. is the positive charge present in the nucleus of an atom,
  2. 4. most reactive halogen in group 17
  3. 5. the amount released when an atom in the gaseous state accepts an electrons to form an anion
  4. 6. is equal to the number of protons in the nucleus i.e. the atomic
Down
  1. 1. from top to botttom atomic radius
  2. 3. elements present in group 2 and period 6