Thank you for your help :) lonization energy energy increases moving across a pe

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Thank you for your help :)
lonization energy energy increases moving across a period and decreases moving down a group in the periodic table. The actual value for ionization of an atom can be estimated using effective nuclear charge energy ionization energy- RH Zefr where Rg is the Rydberg constant for hydrogen and n is the prinipal quantum number for the valence electrons in the atom. Part D What best accounts for the periodic trends seen in ionization energy? Match the items in the left-hand column with the appropriate blank in the sentences in the right-hand column. View Available Hint(s) Reset Help principal quantum number number of electrons effective nuclear charge atomic number 1. The trend in accounts for the increase in ionization energy across a period 2. The trend in accounts for the decrease in ionization energy down a group.

Explanation / Answer

Ans :

The ionization energy is the amount of energy required to remove the electron from the outermost shell of the atom.

Since the effective nuclear charge increases along the period from left to right , so the ionization energy also increases , whereas the principal quantum number increases down the group , due to which the ionization energy decreases.

So here :

1. The trend in effective nuclear charge accounts for the increase in ionization energy across a period.

2. The trend in principal quantum number accounts for the increase in ionization energy down a group.

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