Question: (a) What is the trend in first ionization energies as one proceeds down the group 7A elements? Explain how this trend relates to the variation

(a) What is the trend in first ionization energies as one proceeds down the group 7A elements? Explain how this trend relates to the variation in atomic radii.
(b) What is the trend in first ionization energies as one move across the fourth period from K to Kr? How does this trend compare with the trend in atomic radii?

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