Which will be chemically more reactive element A with atomic no. 17 or element B with atomic no.18 and why?
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Answer:
17
Explanation:
An element whose atomic number is 17 will need only one more electron in order to completely fill its octet. Thus, by gaining one electron it will become stable. ... Thus, we can conclude the element which requires only one electron to fill its octet will be more reactive.
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