A chemistry problem by Hobart Pao
Chemistry
Level
2
True or False?
If atom A's electronegativity is higher than that of atom B, then atom A's ionisation energy is also higher than that of atom B.
True
False
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1 solution
The electronegativity is an atom's affinity to attract electrons, while an atom's ionisation energy is the energy required to remove an electron. It's harder to remove an electron from a noble gas than from a halogen yet the halogens would have a higher electronegativity because the full octet on a noble gas would not accept more electrons whereas a halogen still has an incomplete octet.