The IE1, IE2, IE3, IE4 and IE5 of An Element Are 7.1, 14.3, 34.5, 46.8, 162.2 eV respectively. The Element Is Likely To Be  

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Question

The IE1, IE2, IE3, IE4 and IE5 of an element are 7.1, 14.3, 34.5, 46.8, 162.2 eV respectively. The element is likely to be  

Solution

Correct option is

Si

 

IE5 >> IE4 i.e., it should be very difficult to remove fifth electron after removing four electrons from the element which will be only in the case of silicon. 

    

                                                       (noble gas configuration)

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