Question

Group 16 elements have a lower value of first ionization enthalpy as compared to group 15 elements because:

• A. half filled p-orbitals in group 15 elements are more stable
• B. group 16 elements have smaller size than group 15 elements
• C. group 16 elements contain double bond while group 15 elements have a triple bond
• D. group 16 elements have more number of electrons in p-orbitals

Answer 1

The correct option is A half filled p-orbitals in group 15 elements are more stable

Group 16 elements have a lower value of first ionization enthalpy as compared to group 15 elements. As group 15 elements have half filled p-orbital due to which group 15 have got extra stability.