Question

In: Chemistry

The first four ionization energies in kJ/mol of a certain second-row element are 801, 2427, 3660,...

The first four ionization energies in kJ/mol of a certain second-row element are 801, 2427, 3660, and 25,025. What is the likely identity of the element?

Solutions

Expert Solution

Consider the following graph of the ionization energies.

As seen, there is a spike in the 4th ionization energy of the element. This means that after the 3rd ionization, the element reaches a stable configuration. Therefore, the stable ionic form of the element is +3. When considering the second period, the element with the stable +3 ionic form is boron.

The element is BORON


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