Question

In first period which element has highest ionization potential

Answer 1

Answer:

helium

The first ionization energy varies in a predictable way across the periodic table. The ionization energy decreases from top to bottom in groups, and increases from left to right across a period. Thus, helium has the largest first ionization energy, while francium has one of the lowest

Answer 2

Answer: Helium

Explanation: First period consists of only Hydrogen and Helium, Hydrogen is very easily ionizable, while helium requires a lot of energy to get ionized.

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