Discuss why the atomic radius of Sulfur is smaller than the atomic radius of Alu

Question

Discuss why the atomic radius of Sulfur is smaller than the atomic radius of Aluminum. Discuss why the atomic radius of Potassium is larger than the atomic radius of Argon. Discuss why Chlorine has a much greater first ionization energy than Magnesium. Discuss why Sodium has a much lower first ionization energy than Neon. Discuss why Oxygen has a lower first ionization energy than Nitrogen. Discuss why the electron affinity for Argon is much less than Chlorine. Discuss why the electron affinity for Oxygen is greater than Beryllium. Discuss why Nitrogen has a much lower electron affinity than Carbon.

Explanation / Answer

Q1.

For Sulfur, which has an atomic number of 16, expect it to have then 6 electrons in its valence shell

therefore, this is high in electrons, which have negative charges... For Alumnium, it has only 3 valcne electrons, it (half of those in sulfur) therefore, the electrostatic forces are less

This means, that the radius of aluminium will be larger than that of sulfur, since 6 electorns interact stornger, therefore less distance between charges

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