1.

1 atomic mass unit is equal to                                [Pb. PET 2001]

A.            \[\frac{1}{25}\] (mass of \[{{F}_{2}}\] molecules)
B.            \[\frac{1}{14}\] (mass of \[{{N}_{2}}\] molecules)
C.            \[\frac{1}{12}\] (mass of one C-atom)
D.            \[\frac{1}{16}\] (mass of \[{{O}_{2}}\] molecules)
Answer» D.            \[\frac{1}{16}\] (mass of \[{{O}_{2}}\] molecules)


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