Problem: The ionization energies of an unknown third period element are listed here. Identify the element. IE1 = 786 kJ/mol; IE2 = 1580 kJ/mol; IE3 = 3230 kJ/mol; IE4 = 4360 kJ/mol; IE5 = 16,100 kJ/mol aa) Mg b) Alc) Si d) P

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We are being asked to identify the element with the following ionization energies: IE1 = 786 kJ/mol; IE2 = 1580 kJ/mol; IE3 = 3230 kJ/mol; IE4 = 4360 kJ/mol; IE5 = 16,100 kJ/mol 


Ionization energy (I. E.) is the energy required to remove an electron from a gaseous atom or ion.

First I.E.corresponds to removing the first valence electron from a neutral atom 

Second I.E. refers to removing a second electron

Third I.E. refers to removing the third electron

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Problem Details

The ionization energies of an unknown third period element are listed here. Identify the element. IE1 = 786 kJ/mol; IE2 = 1580 kJ/mol; IE3 = 3230 kJ/mol; IE4 = 4360 kJ/mol; IE5 = 16,100 kJ/mol 

aa) Mg 

b) Al

c) Si 

d) P

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