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Question
Among the following elements, which one has the highest ionisation potential?
Among the following elements, which one has the highest ionisation potential?
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Solution
The correct option is A Hydrogen
Ionization potential is the amount of energy required to remove an electron from an atom or a molecule in the gaseous state. Hydrogen has only one electron in its valence shell or s orbital and ionisation energy decreases from top to bottom in a group as the atomic size increases and as electron cloud goes farther away from the nucleus. So, hydrogen has the highest ionisation potential.
Ionization potential is the amount of energy required to remove an electron from an atom or a molecule in the gaseous state. Hydrogen has only one electron in its valence shell or s orbital and ionisation energy decreases from top to bottom in a group as the atomic size increases and as electron cloud goes farther away from the nucleus. So, hydrogen has the highest ionisation potential.
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