Question

How many of the following elements have first ionisation energy greater than that of sulphur? Al, Si, N, O, F, P, CI, Na, Ne​

Answer 1

Answer:

Either all unpaired or all paired makes it stable, so if phosphorus is all unpaired it take more energy to remove an electron than it would from sulfur in which one electron can be removed making it more stable. Because it takes more energy for phosphorus, it has a higher ionization energy.

Explanation:

The decreasing order of the ionization potential of the following elements is Ne>Cl>P>S>Mg>Al. First ionization potential of Mg is higher than that of AI.

Answer 2

Explanation:

Al, Si, N, O, F, P, CI, Na, Ne