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There are three elements I, II, III and ...

There are three elements I, II, III and their ionisation energies are given below.
`{:(IE_(1),IE_(2)),(I 2372,5251),(II 900,1760),(III 520,7300):}`
Now identify
(a) Which element is most reactive ?
(b) Which element is noble gas ?
(c ) Which can form a stable dihalide ?

Text Solution

Verified by Experts

(a) Element III most reactive
(b) Element I noble gas
(c ) Element II form most stable dihalide
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