Question #1bcba

1 Answer
Lala L.
Dec 21, 2017

Yes , you can predict the element’s reactivity

Explanation:

The lower the ionization energy of an element , the easier it can give off its electrons.The ease with which it can give off its electrons it's called electropositivity;the more electropositive an element is the more reactive it gets , so , as the ionization energy of an element gets lower , its reactivity increases.

If you want a numerical value , you can use the Mulliken electronegativity (electronegativity is the opposite of electropositivity) :

#X=\frac{E_i+E_{ea}}{2}# , where #E_i# is the first ionization energy and #E_{ea}# is the electron affinity.
The measurment unit is #\frac{kJ}{\text{mole}}# or #eV#

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