23Periodic Table TrendsMedium1 mark
Which statements about the Periodic Table are correct?
- 1The horizontal rows of the Periodic Table are called groups.
- 2The Periodic Table is arranged in order of increasing proton number.
- 3The elements in the second column from the left of the Periodic Table form ions with a charge of .
- 4Elements in a horizontal row of the Periodic Table become more metallic going from left to right.