Account for the following: (i) Ammonia is more basic than phosphine. (ii) Elements of Group 16 generally show lower value of first ionisation enthalpy compared to the elements in the corresponding periods of Group 15. (iii) Electron gain enthalpy with negative sign for fluorine is less than that for chlorine.

Account for the following: (i) Ammonia is more basic than phosphine. (ii) Elements of Group 16 generally show lower value of first ionisation enthalpy compared to the elements in the corresponding periods of Group 15. (iii) Electron gain enthalpy with negative sign for fluorine is less than that for chlorine.

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter20: Chemistry Of Hydrogen, Elements In Group 3a Through 6a, And The Noble Gases

Section: Chapter Questions

Problem 20.25QE

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Question

Account for the following:

(i) Ammonia is more basic than phosphine.

(ii) Elements of Group 16 generally show lower value of first ionisation enthalpy compared to the elements in the corresponding periods of Group 15.

(iii) Electron gain enthalpy with negative sign for fluorine is less than that for chlorine.

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