In which of the following options order of arrangement does not agree with the variatioin of property indicated against it?
Thinking process.
i) The ionic size increases as the positive charge on the cation decreases or the negative charge on the anion increases.
ii) First ionisation enthalpy increases from left to right in the periodic table.
iii) Electron gain enthalpy increases as the electronegativity of the atom increases.
iv) The metallic character increases as the size of the metal atom increases.