which of the following have same atomic number
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Explanation:
mention the following also nah how will we ans if que is incomplete
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Explanation:
One mole is the amount of a substance that contains as many particle or entities as there are atoms in exactly 12 g (or 0.012 kg) of the C−12 isotope.
12 g C=1 mole of C and, and 23 g=Na=1 mole of Na
28 g N² =1 mole of nitrogen =2×6.022×10²³ atoms of nitrogen
23 g O² =1 mole of oxygen =2×6.022×10²³ atoms of oxygen
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