Ionization Energies
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Ionization Energies
Ionziation energies increase going up and to the right so would Helium have the highest ionization energy?
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Re: Ionization Energies
Yes, helium has the highest ionization energy since it's in the upper right corner of the periodic table.
Re: Ionization Energies
This is also because Helium is a noble gas. Since it also has very few orbitals and energy shells in the ground state, the electrons experience little to no shielding and thus require extreme amounts of energy to remove electrons.
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Re: Ionization Energies
Thats right, Helium Electrons are held very tightly by the nucleus, as you go down the periodic table the electrons get further and that pull gets weaker.
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Re: Ionization Energies
There are occasionally exceptions to the trend rules for ionization energy, electronegativity, and atomic radii, but since the general trend for ionization energy is that it increases going up and to the right, and I don't know of any exceptions where an element would have a higher ionization energy than He, it's safe to assume that He, being the furthest to the right and up on the periodic table, has the highest ionization energy of all the elements.
Re: Ionization Energies
How would you determine these trends for diagonal (non-adjacent) elements? For example, between Carbon and Sulfur.
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Re: Ionization Energies
Remember that Ionization energy is how much energy it takes to create an ion from a stable molecule. This will be very high for noble gases, because they are so stable.
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Re: Ionization Energies
Hi! Yes since ionization energies decrease from top to bottom within a group. For example, also Fluorine also has a high ionization energy. Also, Cesium is said to have the lowest ionization energy.
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Re: Ionization Energies
604656370 wrote:How would you determine these trends for diagonal (non-adjacent) elements? For example, between Carbon and Sulfur.
I think between those two, carbon would have a higher ionization energy because sulfur is in period 3, which means it has another shell around the nucleus. The extra shell shields valence electrons from the nucleus, which generally makes it easier to take one away, which is what ionization energy is. Thus, it would take more energy to remove an electron from carbon (2 shells) rather than sulfur (3 shells).
That was a good point though, hopefully we never have to compare two elements that could be similar in ionization energies.
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Re: Ionization Energies
Yes, Helium has the highest ionization energy! This is because the electrons in helium are very close to the nucleus and so the electrostatic attraction is very high. This makes it difficult to remove an electron.
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Re: Ionization Energies
Yes and it is very hard to release an electron because the electrons are so tightly packed to each other
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