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Chemistry Forums for Students => Undergraduate General Chemistry Forum => Topic started by: gr3g on November 29, 2005, 01:12:55 PM

Title: Ionization energy of Na and Mg
Post by: gr3g on November 29, 2005, 01:12:55 PM

I had a question on my exam that asked which second ionization energy would be greater for Na or Mg

Mg:1s2 2s2 2p6 3s2   Zeff = 1.5
Na:1s2 2s2 2p6 3s1   Zeff =  1

Since the Zeff is lower in Na, will there be less energy required in Na?
Thanks

Title: Re:Ionization energy of Na and Mg
Post by: Mitch on November 29, 2005, 01:53:59 PM

Will Z_eff be the same after removing an electron?

Title: Re:Ionization energy of Na and Mg
Post by: Albert on November 29, 2005, 02:42:00 PM

Which sounds more familiar between Na²⁺ and Mg²⁺?