Chemistry
With reference to the variation of properties in the Periodic Table, which of the following is generally true?
- Atomic size increases from left to right across a period.
- Ionization potential increases from left to right across a period.
- Electron affinity increases going down a group.
- Electronegativity increases going down a group.
Periodic Table
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Answer
Ionization potential increases from left to right across a period.
Reason — On moving from left to right across a period, the atomic size decreases due to increase in the nuclear charge, and thus, more energy is required to remove the electrons. Hence, ionization potential increases from left to right across a period.
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