Chp4 - Chapter 4: Ionic Bonding Define Properties of Ions...

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Chapter 4: Ionic Bonding Define Properties of Ions Oxidation States Naming Ionic Compounds Predict Formula of Ionic Compounds
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Metals and Non-Metals Metals – VE are high in energy → Ionization Energy is ____ Non-metals – Unfilled orbitals are low in energy → χ is _____ Ion Formed CATION ANION low high What happens when a metal comes into contact with a non-metal? Ionic compounds almost always contain a metal
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3p 3s C l 3s Na e– lowers its energy 3p 3s Cl 3s Na+ Making Salt An ionic bond is formed between Na+ and Cl–. Na: VERY reactive Na+: INERT found with counterion (anion)
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Ionic Radii CATIONS – Loss of electron causes size of atom to ___________ ANIONS – Gain of electron causes size of atom to _________ WHY? n ↓ , Zeff ↑ (e- feel more of the nuclear charge) WHY? Zeff ↓ (# e- > # protons) decrease increase
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Ionic Radii CATIONS – Loss of electron causes size of atom to ___________ ANIONS – Gain of electron causes size of atom to _________ WHY? n ↓ , Zeff ↑ (e- feel more of the nuclear charge) WHY? Zeff ↓ (# e- > # protons) decrease increase
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Isoelectronic Series Electron Configuration: O2- F- Na+ Mg2+ Al3+ 1.40Å 1.33Å 0.97Å 0.66Å 0.51Å As charge increases radius decreases > > > > 1s22s22p6
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CATIONS Positively charged, lost electrons NAMING keep same name of element PREDICTING CHARGE Lose e- in highest n shell If VE have same n, lose from highest l Charge is Group # Electron configuration is previous noble gas [Ar] 4s2 d [Ar] Ca & Ca2+ [Ne] 3s2 3p1 & [Ne] Al & Al3+ [Ar] 4s2 3d3 & [Ar] 3d3 V & V2+
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Chp4 - Chapter 4: Ionic Bonding Define Properties of Ions...

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