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Ionization energy increases as you go across a period, but as you go down a group it decreases.

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Q: How does ionization energy of elements in the same period change?
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Which elements has the highest ionization energy?

Helium (He) has the highest ionization energy, then Neon (Ne) Ionization energy increases as you go across a period from left to right. Ionization energy decreases as you go down a group. Therefore, elements in the upper right of the periodic table have the highest ionization energy.


What happens to the first ionization energy of the elements as a period is crossed?

Moving from left to right across a period, the first ionization energy increases because it becomes increasingly difficult to remove an electron.


Elements belong in upper ionization energy?

All of the elements on the top half of the periodic table belong in upperionizationenergy because the trend is top to bottom. Top being lowest and getting bigger as it goes down.------------------------------------------------------* In a group: the ionization energy decrease from the lighter elements to heavier elements.* In a period: the ionization energy increase from the left elements to the elements of the right.* When the atomic radius decrease the ionization energy increase.


What accounts for the general trend in the first ionuization energy of the elements within a period?

As you go from right to left in a period in the periodic table the ionization energy increases. While going from top to bottom in a group in the periodic table the ionization energy decreases .


What is the relationship between ionization energy and the alkali metals?

There is no relation ship. They have the lowest ionization energies.


What is the correlation of ionization energies to atomic radii for the elements?

In a group the ionization energy decrease when the atomic radius increase; in a period this relation is not generally valid.


How does the first ionization energy change going down and across the periodic table?

In a group the first ionization energy decrease going down.In a period the first ionization energy increase from left to right.


Which has a greater ionization energy beryllium or germanium?

Beryllium has greater ionization energy, with 899 kJ/mol versus Germanium's 762 kJ/mol. The general trend (most prominently displayed in the representative elements) in the periodic table is increasing ionization energy across a period, and decreasing ionization energy down a group.


Which atom or ion in each pair has the larger ionization energy Cl or P?

Chlorine, Cl. Elements with the most ionization energy are located at the top right corner of the periodic table. As you travel down a period the ionization energy increases, whereas travelling down a group the ionization energy decreases.


Which statement describes the general trends in electronegativity and first ionization energy as the elements in Period 3 are considered in order from Na to Cl?

The Pauling electronegativity and the first ionization energy increase from sodium to chlorine.


Why do element in the third period have lower ionization energies than elements in the second period?

With each additional period, there is an additional energy level, which means that the outermost electrons are farther away from the nucleus of the atom. This means that the attractive force of the positively charged nucleus is less, so it takes less energy to remove an electron from an atom in the third energy level than it does from an atom in the second energy level. Therefore, the elements in the third period have lower ionization energies than elements in the second period.


What is the Trend in first ionization energy across a period?

As one proceeds down the group 7A elements, the first ionization energy decreases. this means that the outermost electron is more readily removed as we go down a group.