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Electronicconfigurationof someelement ofgiven in column Iand theirelectrongainenthalpies are given incolumn II. Matchthe electronicconfigurationwith electrongain enthalpy. {:(,,"Column I",,"Column II"),((i),,1s^(2)2s^(2)2p^(6),,(A)-53),((ii),,1s^(2)2s^(2)2p^(6)3s^(1),,(B )-328),((iii),,1s^(2)2s^(2)2p^(5),,(C )-141),((iv),,1s^(2) 2s^(2)2p^(4),,(D) +48):} |
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Answer» Solution :(i) Thiselectronicconfigurationcorrespondsto noblegas, neon . Sincenoblegaseshave + ve`Delta_(eg)` H avluethereforeelectronicconfiguration(i) corresponds to element D having`Delta_(eg) H` = +48 kj `mol^(-1)`. (ii) Thiselectronicconfigurationcorresponds to thealkalimetalpotassium.Sincealkalimetalshave smallnegative `Delta_(eg)` VALUES , thereforeelectronicconfiguration(ii)corresponds to element A with `Delta_(eg) H`=- 53 kJ `mol^(-1)` (III)Thiselectronicconfigurationto thehalogen FLUORINE. Sincehalogenhave highnegative`Delta_(eg) H` valuesthereforeconfiguration (iii)corresponds to the elementB having`Delta_(eg) H` =- 32 kj `mol^(-1)` (iv)This electronicconfigurationcorrespondsto the chalcogenoxygen , Sincechalogenhave`Delta_(eg) h`valueless negativethan thosehalogensthere foreelectronicconfiguraiton(iv)corresponds to element C having`Delta_(eg) H `=- 141 kj `mol^(-1)` FROMTHE abovediscussion thecorrectmatchingis , (i) `to( D) , (ii) to(A) , (iii)to ( B)` and `(iv) to( C ) ` |
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