Ionization Energy

[405289292]

Is it possible that the first ionization energy of any atom could be more than the second? I'm just wanting to clarify for my notes.

[sarahforman_Dis2I]

Is it possible that the first ionization energy of any atom could be more than the second? I'm just wanting to clarify for my notes.

No, the First Ionization Energy is always smaller than the second. This is because of the decreased electron-electron repulsion with the same positive charge. Because of this, the second ionization energy is alway larger than the first.

[Esha Chawla 2E]

Is it possible that the first ionization energy of any atom could be more than the second? I'm just wanting to clarify for my notes.

I don't think it is possible for the first ionization energy of any atom to be more than the second ionization energy. Simply theoretically speaking, it is easier to remove the 1st electron because there is more electron shielding, which means that there is a lower effective nuclear charge. Once the first electron is removed, there is less electron shielding, which results in a higher effective nuclear charge. Moreover, the nuclear charge of the atom remains the same, which means that it is easier to remove that second electron.

[Lauren Tanaka 1A]

The 2nd ionization energy is greater than the first since successive ionizations are bigger. This is because removing a 2nd electron is harder than removing the first electrons since there's less electron repulsion.