The correct order of IE(2) of C, N, O an...

The correct order of `IE_(2)` of `C, N, O` and `F` is

`O gt F gt N gt C`

`F gt O gt N gt C`

`C gt N gt O gt F`

`O gt N gt F gt C`

Text Solution

Verified by Experts

The correct Answer is:

a. `O gt F gt N gt C`
i.`O(2s^(2)2p^(4))(-e^(-))/(IE_(1)) O^(o+)(-e^(-))/(IE_(2))O^(2+) (2s^(2) 2p^(2))`
`:. [["Stable half-filled"],["p-shell" ","],["hence" IE_(2) is],["very high"]] [["Difficult"],["to remove"],[e^(-)]]`
ii. `F(2s^(2) 2p^(5)) (-e^(-))/(IE_(1)) F^(o+)(2s^(2) 2p^(4)) (-e^(-))/(IE_(2)) F^(2+) (2s^(2)2p^(3))`
`:. [[IE_(2) "is less"],["than that of O"]] [["Easly to"],["remove" e^(-)]] [["Stable half-filled"],["p-shell"]]`
iii. `N(2s^(2) 2p^(3)) (-e^(-))/(IE_(1)) N^(o+)(2s^(2) 2p^(2)) (-e^(-))/(IE_(2))N^(2+) (2s^(2) 2p^(1))`
`:. [["Stable half-filled"],["p-shell"],["hence" IE_(1) is],["higher than"],["O and F"]] ((IE_(1) is),("less than"),("O and F")) [[ "Easy to"],["remove"],[e^(-)]]`
iv. `C(2s^(2) 2p^(2)) (-e^(-))/(IE_(1)) C^(o+)(2s^(2) 2p^(1)) (-e^(-1))/(IE_(2)) C^(2+)(2s^(2) 2p^(0))`
`[[IE_(1) is],["less than"],[O "," F and N]] [["Very"],[easy],["to remove"],[e^(-)]] [["Very"],["stable"],["configuration"]]`
Hence order of `IE_(2)` is
`O gt F gt N gt C`

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The correct order of second I.E. of C, N, O and F are in the order:

FgtOgtNgtC

CgtNgtOgtF

OgtNgtFgtC

OgtFgtNgtC

The correct order of the size of Be , C , F and Ne is

`Be gt C gt F gt Ne`

`Be lt C lt F lt Ne`

`F lt C lt S lt P`

`Be gt C gt F lt Ne`

The correct order of ionisation energy of C, N, O and F is

`F lt N lt C lt O`

`C lt N lt O lt F`

`C lt O lt N lt F`

`F lt O lt N lt C`