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Predictwhichatom ineach of thefollowingpairshas thegreater firstionizationenthalpy and explain your answer (a) Band C( b) N and O ( c) F and Ne |
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Answer» (b)Out of N and O, nitrogen has HIGHER first ionisation enthalpy becuase in case of N the electron is to be removed from a HALF filled sub-shell as its ELECTRONIC configuration is `1s^2 2s^2 2p^3` whereas in case of oxygen theelectronic configuration is `1s^2 2s^2 2p^4` so it is easier to remove an electron in comparison to N (C ) Ne has higher ionisation enthalpy as it is a noble gas and it has electronic configuration `1s^2 2s^2 2p^6` , the outermost shell is fully filled so it gets tougher to remove an electron in comparison to F.Solution :(a) Chas higher `Delta_(i)H_1)` than Bbecauseof highernuclear a charge (b) N hashigher `Delta_(i) H_(1)` than Obeacausein case N, theelectronhas to belostfroma morestableexactly half- filledelectronicconfiguration ( c) Ne hashigher`Delta_(i) H_(1)` than Fbacause of stable inertgas configuration |
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