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Elements A, B and C have atomic numbers ...

Elements A, B and C have atomic numbers (Z-2), Z and (Z+1) respectively. Of these, B is an inert gas.
(1) Which one of these has the highest electronegativity?
(2) Which one of the these has thhe highest ionisation potential?

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(1) Since element B (atomic no=Z) is an inert gas, the element 'A' with atomic number (Z-2) id included is group-VIA. On the other hand, the element C, having atomic number (A+1) must belong to group- IA (alkali metal). Hence, the electronegativity of the element A is maximum.
(2) The element B, being an inert gas, has the highest value of ionisation potential.
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