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n=1

n=1. n=2. n=1. n=2. n=3. n=1. Mg (Z=12). Radii Ne=0.69 Å Na=1.54 Å Mg=1.30 Å. Atomic Radii. Grey = Neutral Radii, Red = Cationic Radii, Blue = Anionic Radii . Isoelectronic Series. Isoelectronic atoms/ions have identical numbers of electrons. Radii O 2- = 1.40 Å F - = 1.33 Å

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n=1

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  1. n=1 n=2 n=1 n=2 n=3 n=1

  2. Mg (Z=12) Radii Ne=0.69 Å Na=1.54 Å Mg=1.30 Å

  3. Atomic Radii

  4. Grey = Neutral Radii, Red = Cationic Radii, Blue = Anionic Radii

  5. Isoelectronic Series Isoelectronic atoms/ions have identical numbers of electrons. Radii O2- = 1.40 Å F-= 1.33 Å Na+= 0.97 Å Mg2+= 0.66 Å As the nuclear charge in an isoelectronic series increases the size of the atom decreases.

  6. Periodic Trends in 1st Ionization Energy

  7. Periodic Trends in 1st Ionization Energy Non-metals, high 1st IE C P I As S Zn Se Si Ga

  8. Beyond 1st Ionization Energy

  9. Electron Affinity

  10. Properties of the Group I & II Metals

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