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I1 and I2 of an element are 700 and 1200...

`I_1 and I_2` of an element are 700 and 1200 `kJmol^(-1)`  If `1000 kJ mol^(-1)` energy is supplied to the gaseous atomic element and the ionisations occur in succession, find the ratio of monovalent and divalent cations. 

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