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Grade: 12

                        

first and second ionization energies of magnesium are 5.7 and 15.035eV the amount of energy in kJ needed to convert all the atoms of magnesium into mg+2 ions present in magnesium vapours is

first and second ionization energies of magnesium are 5.7 and 15.035eV the amount of energy in kJ needed to convert all the atoms of magnesium into mg+2 ions present in magnesium vapours is

4 years ago

Answers : (1)

Vikas TU
14149 Points
							
Mg      ------->             Mg+          +  e-      I.E1= 5.7 eV.
Mg+ -------->          Mg2+          +  e-         I.E.2 = 15.035 eV.
For
Mg to Mg2+
the eqns. would be
Mg      ----------->      Mg2+          +     2e-
adding the I.E1 AND IE2 eqns.
We get, the final eqn. therfore
the I.E required for this eqn. would be:    
I.E = I.E1 + I.E2
     = 5.7 + 15.035
     = 20.735 eV.
4 years ago
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