Which of the following statement is incorrect regarding the given elements?

AA is the most electronegative element

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BB is a noble gas

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CC is an alkali metal

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DD has 5 electrons in its outermost shell

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Solution

The correct option is C CC is an alkali metal
CC belongs to the second group of the periodic table. Hence, it is an alkaline earth metal.

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The most common oxidation state of an element is -2. The number of electrons present in its outermost shell is:

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