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Discuss value of first ionisation enthalpy in same period and why? |
Answer» Solution :Generally, we go left to right in PERIODIC table ionisation enthalpy at elements are increases. Ionisation enthalpy and Atomic radius are related to each other. In period left to right atomic radius of elements DECREASES so attraction of nucleus and ELECTRON of outer most orbital increases. So ionisation enthalpy increases. When we go left to right in period clectron is ADD in some orbit so shielding effect is not so much increase. In this situation effective nuclear charge an electron of outer most orbit is increases that shielding effect. So, in period outer most electrons are strongly BONDED with nucleus, so ionisation enthalpy in increases when we go left to right in period. |
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