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atomic number 15

n.
1.a multivalent nonmetallic element of the nitrogen family that occurs commonly in inorganic phosphate rocks and as organic phosphates in all living cells

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    Idiom of the Day

    out of one's mind/head/senses
    to be silly or crazy, to be not using common sense
    My friend was out of his mind to buy a new computer when he has no money.



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    Pick the correct Antonym :
    Perfunctory

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