Which of the following pairs have have the same number of atom
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(c) Number of atoms of nitrogen
= Mass / Atomic mass × 6.023 × 1023
= 28/14 × 6.023 × 1023
= 2 × 6.023 × 1023
(d) Number of atoms carbon = 12/12 × 6.023 × 1023
= 6.023 × 1023
Number of atoms of sodium = 23/23 × 6.023 × 1023
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