Correct statement/s among the following with respect to ionization energy (IE) is/are
(i) (IE1 + IE2 + IE3) for indium is more than that of aluminium
(ii) IE1 of scandium is higher than that of cobalt
(iii) IE1 of gallium is lower than that of selenium
(iv) IE1 of nitrogen is greater than that of oxygen
1
(ii) and (iv)
2
(iii) and (iv)
3
(i) and (iv)
4
(ii) and (iii)