In: Chemistry
The ionization energies for a hypothetical element are listed below. Based on these ionization energies, identify which group the element would be from on the Periodic Table.
| 
 IE1 (kJ/mol)  | 
 IE2 (kJ/mol)  | 
 IE3 (kJ/mol)  | 
 IE4 (kJ/mol)  | 
 IE5 (kJ/mol)  | 
 IE6 (kJ/mol)  | 
| 
 600  | 
 1200  | 
 7300  | 
 9580  | 
 12,600  | 
 14,640  | 
According to the given trend of ionization energies the first 2 electrons are removed easily with less expenditure of energy which means that this element has 2 valence electrons.
Third and successive electrons requires enormous amount of ionization energies which means that these electrons are removed from very stable noble gas configuration.
This element has 2 valence electrons and it must belong to group 2 of the periodic table.
Answer -- Group 2