Why do the periodic properties such as ionization enthalpy, electron gain
enthalpy and electronegativity shows a decreasing trend down the group but an
increasing trend along a period ? Explain your answer.
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Why do the periodic properties such as ionization enthalpy, electron gain
enthalpy and electronegativity shows a decreasing trend down the group but an
increasing trend along a period ? Explain your answer.
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Answer:
As a result of increase in effective nuclear charge, the attraction for the outer electron and the nucleus increases in a period and therefore, electronegativity also increases. (b) On moving down a group there is a gradual decrease in ionisation enthalpy.
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