Question

Name the elements with highest and lowest ionisation energies in first three periods

Answer 1

Answer:

Explanation:

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:

The ionization energy decreases from top to bottom in groups, and increases from left to right across a period.

So,helium has the largest first ionization energy, while francium has one of the lowest.....

Explanation:

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