Published by:
CGP EDU Academic Team
Published on: August 14, 2026
The first and second ionisation enthalpies of a metal are 496 and 4560 kJ moll, respectively. How many moles of 
and 
, respectively, will be needed to react completely with 1 mole of the metal hydroxide?
Text Solution
Verified by ExpertsThe correct answer is:
A
According to the given data of I.E.,
This element must belong to group 1 and thus is monovalent and form hydroxide of the type M 
1 mole 1 mole
1mole ½ mole
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