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                              Q:
                           
                           
                                                      | A) Silicon | B) Tin | 
| C) Lead | D) Carbon | 
                              Answer:   D) Carbon
                              
                                                            
                              
Explanation:
                               
                           
                           Explanation:
As the ionization energies of the elements decreases down the group carbon has got the highest ionization energy in the group being at the top of the group.
Carbon is on the top of the group 4 among the given elements. Hence, Carbon has the highest ionization energy.
 
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