11th Class Chemistry Classification of Elements and Periodicity in Properties

  • question_answer 7) Which of the following will have the most negative electron gain enthalpy and which the least negative? \[P,S,Cl,F\] Explain your answer.

    Answer:

    Electron gain enthalpy generally becomes more negative across a period as we move from left to right. \[\text{Cl S P}\] Within a group, electron gain enthalpy becomes less negative down a group. However, adding an electron to \[2p\]-orbital leads to greater repulsion due to high electron density than adding an electron to the larger \[3p\]-orbital. Hence, chlorine has more negative electron gain enthalpy than fluorine. Therefore, phosphorus has least negative electron gain enthalpy and chlorine has most negative electron gain enthalpy.

More Questions

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

adversite


You need to login to perform this action.
You will be redirected in 3 sec spinner