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Ionisation of 1 and 2 group element is 

Option: 1

Exothermic process 


Option: 2

Endothermic process 


Option: 3

Can be both a and b 


Option: 4

None of these 


Answers (1)

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As we have learned 

Ionisation of 1 and 2 group elements in an endothermic process. we need to give energy in order to make the element to lose its valence electrons 

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