why do u think the noble gases r placed in a separate group??
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Because they do not react with any element
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Noble gases are placed in a separate group in the periodic table because
1) They are inert or unreactive gases .
2) They don't combine with any other element of the periodic table .
3) They are placed in Group 18 because all have eight electrons in their outer shells .
1) They are inert or unreactive gases .
2) They don't combine with any other element of the periodic table .
3) They are placed in Group 18 because all have eight electrons in their outer shells .
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