Which one between Na and `Na^(+)` would have more size ?

Which one between Cl and Cl^(-) would have more size ? Why ?

Which one between Cl and Cl^(-) would have more size ?

2 ) Which one belongs to 3 ^(rd) period , Na or Al or both ?

Which one in each of the following pairs is larger in size ? Na, Al

Which one in each of the following pairs is larger in size ? Na, Mg ^+2

Between ""_(11) Na and ""_(17) Cl , which one has more ionization energy ?

Which one in each of the following pairs is larger in size ? (a) Na,Al " " (b ) Na,Mg^(+2)" "(C ) S^(2- ) , Cl^(-) " " (d ) Fe^(2+), Fe ^(3+)" " (e ) C^(4- ) , F^(-)

Between ""_(11)Na and ""_(17) Cl , which one has more nuclear change ?

Which among the following should have a smaller second ionisation energy: Na or Mg? Why?

Do you think that pairs of Na^+Cl^− as units would be present in the solid crystal?