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प्रश्न
Which of the following is/are true with respect to carbon-12.
पर्याय
relative atomic mass is 12 u
oxidation number of carbon is +4 in all its compounds.
1 mole of carbon-12 contain 6.022 × 1022 carbon atoms.
all of these
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उत्तर
relative atomic mass is 12 u
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