Column-I a) lonization energy a b) Units of ionization energy c) Ionization energy decreases d) Ionization energy increases Column-II p) On moving left to right in a period q) e.V/atom or K.cal/mole r) On moving down the group s) Nuclear charge t) Stable electronic configuration​

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Explanation:

  • As we move from left to right in a period, electrons are added to the same shell. As the number of electrons and protons goes on increasing the attraction goes on increasing and atomic size decreases.Thus the outermost shell electrons come closer to the nucleus and are more firmly bound.Thus, more amount of energy is required to remove an electron from the outermost shell and hence, Ionisation Potential increases.

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so common difference is 7

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Answer

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Explanation:

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