Chemistry Knowledge - Chemistry Knowledge factors affecting...

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Chemistry Knowledge factors affecting ionization energy atomic radius o smaller atoms hang on to valence electrons more tightly, and so have higher ionization energy charge o the higher the positive charge becomes, the harder it is to pull away additional electrons o second ionization energy is always higher than the first orbital penetration o It's easier to remove electrons from p orbitals than from s orbitals electron pairing o within a subshell, paired electrons are easier to remove than unpaired ones o reason: repulsion between electrons in the same orbital is higher than repulsion between electrons in different orbitals Effective Nuclear Charge The effective nuclear charge is the amount of positive charge acting on an electron. It is the number of protons in the nucleus minus the number of electrons in between the nucleus and the electron in question. Basically, the nucleus attracts an electron, but other electrons in lower shells repel it (opposites attract, likes repel). [ edit
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This note was uploaded on 03/15/2010 for the course MSE 2060 taught by Professor Liddell during the Spring '09 term at Cornell University (Engineering School).

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Chemistry Knowledge - Chemistry Knowledge factors affecting...

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