Chemistry · Periodic trends in properties of elements: atomic and ionic radii, ionization enthalpy, electron gain enthalpy, valence, oxidation states and chemical reactivity
IP values of an element 'X' are 104 kJ, per mole Identify the group to which the
IP values of an element 'X' are 104 kJ, \( 200 \mathrm{kJ}, 420 \mathrm{kJ}, 2825 \mathrm{kJ} \) per mole Identify the group to which the element belongs ?
- A. \( I A \)
- B. \( I I A \)
- C. \( I I I A \)
- D. \( I V A \)
Step-by-step solution
The large jump in ionization energy from the third (420 kJ) to the fourth (2825 kJ) indicates that the fourth electron is being removed from a stable inner shell (core electrons). This suggests the element has three valence electrons, placing it in group IIIA (group 13) of the periodic table.