Consider the following ionization enthalpies of two elements 'A' and 'B' Which of the following statements is correct ?

Consider the following ionization enthalpies of two elements 'A' and '

1.	Consider the following ionization enthalpies of two elements 'A' and 'B' Which of the following statements is correct ?
Answer» Both 'A' and 'B' belong to group -1 where 'B' comes below 'A'. Both 'A' and 'B' belong to group -1 where 'A' comes below 'B'. Both 'A' and 'B' belong to group -2 where 'B' comes below 'A'. Both 'A' and 'B' belong to group -2 where 'A' comes below 'B'. Solution :Generally, the ionization enthalpies or energy increases from left to RIGHT in a period and decreases from top to bottom in a group. SEVERAL factor such as atomic radius, nuclear,charge, shielding effect are RESPONSIBLE for change of ionization enthalpies. Here, 1st ionization enthalpy of A and B is greater than group I(Li 520 `kJmol^(-1)` to Cs374`kJmol^(-1)`), which means ELEMENT A and B belong to group -2 and all three given ionization enthalpy values are less for element B means B will COME below A