Given an element having the following ionization enthalpies, 
and 
. One mole of hydroxide of this element is treated separately with 
and 
respectively. Moles of 
and 
reacted respectively are:
Text Solution
Verified by ExpertsA
The given data for ionization energies clearly shows that 
. So, the element belongs to the first group. Therefore, we can say that this element will be monovalent and hence forms a monoacidic base of the type MOH.
So, from the above equation we can say that,
1 mole of metal hydroxide requires 1 mole of 
and 0.5 mole of 
.
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