Periodic Trend: Ionization Energy Video Lessons

Concept: Ionization Energy (IE)

# 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

###### FREE Expert Solution

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