What is noble gas? Why are they placed in a separate group in the modern periodic table?
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Answer:
Noble gas are the gases which have
their outermost shell fully filled with the required amount of electrons.
They are placed separately as these are the only gases in the periodic table which don't react.
Answered by
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Answer:
Explanation:
Noble gases like He, Ne, Kr, Xe and Rn are placed in a separate group because of the following reasons:
They are extremely unreactive.
They donot combine with any other element of the periodic table.
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