DAT question -ionization energy

[KristenD77]

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Hey so I know that ionization energy increases from left to right and decreases going down a group.
However this a question I came across

Which element will have the LOWEST ionization energy
a)Li B)Na C) Be D)K E)Rh
The answe is E

Why is it E when it's further to the right than the others?

 

[KoonS]

nvm, thought it was rb lol

 

[tombradyschin]

I deleted this information from my brain as I walked out of the DAT test

 

[PocketRocket]

Understanding this conceptually helped me a lot in answering the periodic trend questions. I don't feel like elaborating because I already took the DAT

 

[GAdawg94]

Hey so I know that ionization energy increases from left to right and decreases going down a group.
However this a question I came across

Which element will have the LOWEST ionization energy
a)Li B)Na C) Be D)K E)Rh
The answe is E

Why is it E when it's further to the right than the others?

I'm pretty sure on this.. the smaller the size of the atom then the higher the ionization energy. Its harder to pluck off an electron when the atom is smaller and the nucleus is holding the electrons closer. The larger the atom then its easier to pluck off an electron because theyre not held as tightly to the nucleus. Learning one trend and then fit it in with the others to make it easier to understand. Just dont memorize trends in a vacuum

 

[KristenD77]

I'm pretty sure on this.. the smaller the size of the atom then the higher the ionization energy. Its harder to pluck off an electron when the atom is smaller and the nucleus is holding the electrons closer. The larger the atom then its easier to pluck off an electron because theyre not held as tightly to the nucleus. Learning one trend and then fit it in with the others to make it easier to understand. Just dont memorize trends in a vacuum

Thank you

 

[postpitadh]

Also, remember that Be and N are happy with their exactly half full or full subshells. So, the ionization energies of B and O are actually lower than those of Be and N, respectively.

 

[KristenD77]

Also, remember that Be and N are happy with their exactly half full or full subshells. So, the ionization energies of B and O are actually lower than those of Be and N, respectively.

Thank you