Chemistry
Ionisation potential increases over a period from left to right because :
- Atomic radius and nuclear charge increase
- Atomic radius and nuclear charge decrease
- Atomic radius increases and nuclear charge decreases
- Atomic radius decreases and nuclear charge increases
Periodic Table
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Answer
Atomic radius decreases and nuclear charge increases
Reason — On moving from left to right across a period, the atomic radius 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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