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in a period size decreases from left to right and hence electrons are more tightly held to the nucleus. so electron gain enthalpy increases across a period .

down the period size increases and thus in general electron gain enthalpy decreses .

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11y ago
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11y ago

Both, electronegativity and ionisation potential, will increase across (from left to right) a period and will decrease down a group.

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12y ago

Due the addition of shell

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Q: How does ionization enthalpy vary as you move across the periods vary from left to right?
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Related questions

Which element in the fifth period has the highest ionization energy?

xenon increases from left to right across periods (first ionization energy)


Describe the trends in first ionization energy within groups and across periods in the periodic table Provide examples?

When moving left to right across the PT the ionization energy increases. As you go down, the ionization energy, decreases.


When moving from left to right across the periodic table the size of cations?

Two things happen when you move from right to left. First, the number of valence electrons increases from one to eight. Secondly, the number of protons increases from three to ten. There is also the transition from alkali metal to alkaline earth metal to metalloid to nonmetal to halogen to noble gas.


Ionization energies tend to do what from left to right across a period?

increase from left to right across a period.


What is the general trend in ionization energy?

increases from left to right across a period.


Moving across a period on the periodic table from left to right?

ionization energy


What is the general trend of ionization energy as you go across the periodic table?

Across a period, first ionization energy increases. However, when going down a group, first ionization energy generally decreases. As you go down a group, atoms hove more total electrons so they don't really care that much about their outermost ones.


What is the general trend in first ionization energy?

increases from left to right across a period.


What has the greatest first ionization energy Li Be B or C?

It's carbon. The trend for 1st ionization energy is that it increases as you move left-to-right across a period. As you move in that direction across period 2, ionization energy increases, and since carbon is the most to the right, it has the highest 1st I.E.


What trend does the first ionization follow going across the periodic table?

As you travel to the right, it increases


From left to right across the second period of the periodic table?

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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.