The successive ionization energy values for an element 'X' are given below: (i) 1st ionisation energy = 410 kJ mol-1 (ii) 2nd ionisation energy = 410 kJ mol-1 (iii) 3rd ionisation energy = 1100 kJ mol-1 (iv) 4th ionisation energy = 1500 kJ mol-1 (v) 5th ionisation energy = 1500 kJ mol-1 Find out the number of valence electron for the atom 'X'

Question

The successive ionization energy values for an element 'X' are given below: (i) 1st ionisation energy = 410 kJ mol-1 (ii) 2nd ionisation energy = 410 kJ mol-1 (iii) 3rd ionisation energy = 1100 kJ mol-1 (iv) 4th ionisation energy = 1500 kJ mol-1 (v) 5th ionisation energy = 1500 kJ mol-1 Find out the number of valence electron for the atom 'X'  (A) 4 (B) 3 (C) 5 (D) 2

Tardigrade Admin · Accepted Answer

The ionization energy values for valence electrons are comparable to remove electrons from inner shell very high amount of energy is needed. In the given values there is a biggest jump between IE4 and IE5 . Hence, there are four valence electrons for the atom X .

4

3

5

2

1

The ionization energy values for valence electrons are comparable to remove electrons from inner shell very high amount of energy is needed. In the given values there is a biggest jump between IE4​ and IE5​ . Hence, there are four valence electrons for the atom X .

The ionization energy values for valence electrons are comparable to remove electrons from inner shell very high amount of energy is needed. In the given values there is a biggest jump between $I E_{4}$ and $I E_{5}$ . Hence, there are four valence electrons for the atom $X$ .