InterviewSolution
Saved Bookmarks
InterviewSolution
| 1. |
Although for `Mg`, `Delta_iH(378 kJ mol^(-1))` is greater than `Delta_iH_2 (1450 kJ mol^(-1))`, `Mg` prefers to form `MgCl_2` rather than `MgCl` becauseA. `Mg^(2+)` ion has the noble gas configurationB. `Mg^(2+)` ion is smaller than `Mg^(+)`C. `Mg^(2+)` ion has higher charge than `Mg^(+)` ionD. the lattice enthalpy of `MgCl_2` is very high |
|
Answer» Correct Answer - D Lattice enthalpy of `MgCl_2(2527 kJ mol^(-1))` is more than enough to compensate for the energy needed to remove the first two electrons from an `Mg` atom (`738 kJ mol^(-1)+1450 kJ mol^(-1)=2188 kJ mol^(-1)`). |
|