MCQ
First ionisation enthalpy values of first four group 15 elements are given below. Choose the correct value for the element that is a main component of apatite family :
- ✓$1012 kJ mol ^{-1}$
- B$1402 kJ mol ^{-1}$
- C$834 kJ mol ^{-1}$
- D$947 kJ mol ^{-1}$