Question

the difference between the second and the third ionization energies of oxygen is _____.

a 1,000 kj/mol

b 2,000 kj/mol

c 1,500 kj/mol

d 1,910 kj/mol

Explanation:

Step1: Recall ionization energy values of oxygen

The second - ionization energy of oxygen ($I_{2}$) is approximately 3388 kJ/mol and the third - ionization energy of oxygen ($I_{3}$) is approximately 5300 kJ/mol.

Step2: Calculate the difference

The difference $\Delta I=I_{3}-I_{2}=5300 - 3388=1912\approx1910$ kJ/mol.

Answer:

d. 1,910 kJ/mol