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Brianoki
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Consider the group 1A elements sodium (period 3), potassium (period 4), and rubidium (period 5). What would you predict about the ionization energies of these elements?

Verified Answer :

jalynharrington

The given elements are all group one elements so the ionization energy could be rank as Rb>K>Na. Hope this answers the question. Have a nice day.

mppalenciaa

Answer:

ionization energy Na > K > Rb

Explanation:

The tendency of the ionization energies in the periodic table is to increase while decreases the number of periods (moving from the bottom up) and increase while increase the groups (moving from left to right).

Then, one would predict that the higher ionization energy will be that of sodium followed by the one of potassium and finally the rubidium with the lowest ionization energy

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