Identify the wrong statement in the following [CBSE AIPMT 2012]
1) Atomic radius of the elements increases as one moves down the first group of the periodic table
2) Amongst isoelectronic species, greater the negative charge on the anion, larger is the ionic radius
3) Amongst isoelectronic species, greater the negative charge on the anion, larger is the ionic radius
4) All of these
3) Amongst isoelectronic species, greater the negative charge on the anion, larger is the ionic radius