r Questions 11—13, you will need to consider ionizations beyond the first ionization energy. For example, the second ionization energy is the energy to remove a second electron from an element.
The first four ionization energies for elements X and Y are shown below. The units are not kJ/mol.
l>
X | Y | |
First | 170 | 200 |
second | 350 | 400 |
Third | 1800 | 3500 |
fouth | 2500 | 5000 |
entify the elements X and Y. There may be more than one answer. so explain completely.
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