Lithium has the least number of protons, rubidium has the most number of protons.
Fluorine has the largest first ionization energy among the halogens.
The first ionization energy of an element, like sulfur (s), is important in determining its reactivity. A low first ionization energy means it is easier for the element to lose an electron and form a positive ion, making it more reactive. Conversely, a high first ionization energy means it is harder for the element to lose an electron, making it less reactive.
Sodium (Na) has the lowest first ionization energy in period 3.
The first level ionization energy oif aluminium is 577,5 kJ/mol.All alkali metals have lower values for the ionization energy.
Element 115 on most modern periodic charts.
T he smallest first ionization energyis for lithium.
Helium has the highest ionization energy.
Element P (phosphorus) has a lower first ionization energy than element S (sulfur).
Fluorine has the largest first ionization energy among the halogens.
The first ionization energy of an element, like sulfur (s), is important in determining its reactivity. A low first ionization energy means it is easier for the element to lose an electron and form a positive ion, making it more reactive. Conversely, a high first ionization energy means it is harder for the element to lose an electron, making it less reactive.
Sodium (Na) has the lowest first ionization energy in period 3.
As an example potassium has a lower first ionization energy than aluminum (Al).
The first level ionization energy oif aluminium is 577,5 kJ/mol.All alkali metals have lower values for the ionization energy.
Element 115 on most modern periodic charts.
Rb
Barium has more energy levels. So it has lesser ionization energy.
The element in the fifth period with the highest ionization energy is xenon. Ionization energy generally increases across a period from left to right, so xenon, being on the far right of the period, has the highest ionization energy.