Find the number of properties showing a regular trend from NH₃ to SbH₃:
(i) melting point; (ii) boiling point; (iii) X-H bond length; (iv) bond angle; (v) Lewis basicity; (vi) bond dissociation enthalpy; (vii) percentage p-character in the central-atom orbital used for X-H bonding.

Question

Find the number of properties showing a regular trend from NH₃ to SbH₃:

(i) melting point; (ii) boiling point; (iii) X-H bond length; (iv) bond angle; (v) Lewis basicity; (vi) bond dissociation enthalpy; (vii) percentage p-character in the central-atom orbital used for X-H bonding.

TestHub · Accepted Answer

Melting point and boiling point are irregular because of hydrogen bonding and packing effects.

X-H bond length increases regularly.

Bond angle, Lewis basicity, bond dissociation enthalpy and p-character decrease regularly.

Hence 5 properties are regular.

Chemistry - Complete P-block Question with Solution | TestHub

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