InterviewSolution
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InterviewSolution
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Which is correct about ionisation potential ?A. `IE_(1)` of `IE_(1)` of `O`B. `IE_(2)` of `N gt IE_(2)` of `O`C. `IE_(2)` of `Li gt IE_(2)` of `Ne`D. `IE_(1)` of `Al gt IE_(1)` of `Ca` |
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Answer» Correct Answer - A::C a. True. `IE_(1)` of `N gt IE_(1)` of `O`, due to half-filled configuration in `N`. b. False. `N underset(("More stable"))((2s^(2) 2p^(3))) underset(("High" IE_(1)))overset(-e^(-))rarr N^(o+) underset(("Last stable"))((2s^(2) 2p^(2)))` `underset(("Low" IE_(2)))overset(-e^(-))rarr N^(2+)(2s^(1) 2p^(1))` `O underset(("Last stable"))((2s^(2) 2p^(4))) underset(("Low" IE_(1))) overset(-e^(-))rarr O^(o+) underset(("More stable"))((2s^(2) 2p^(3)))` `underset(("High" IE_(2))) overset(-e^(-))rarr O^(2+) (2s^(2) 2p^(2))` Hence, `IE_(2)` of `O gt IE_(2)` of `N` c. True. `Li underset(("Less stable"))((2s^(1))) underset(("Low" IE_(1)))overset(-e^(-))rarr underset(("More stable")) (Li^(o+)(2s^(0))) underset(("High" IE_(2))) overset(-e^(-))rarr Li^(2+) (1s^(1))` `Ne underset(("More stable")) ((2s^(2) 2p^(6))) underset(("High" IE_(1))) overset(-e^(-))rarrNe^(o+) underset(("Less stable"))((2s^(2) 2p^(5)))` `underset(("Low" IE_(2))) overset(-e^(-))rarr Ne^(2+) (2s^(2) 2p^(4))` `:. IE_(2)` of `Li gt IE_(2)` of `Ne` d. False. `IE` of `Ca gt IE` of `Al`, due to stable configuration in `Ca (4s^(2))` than in `Al (3s^(2) 3p^(1))`. |
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