JEE CHEMISTRY MCQ: CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

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Mendeleev corrected the atomic mass of:

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Correct option: D

All of these

Option D (All of these) is correct because Mendeleev corrected the atomic masses of Beryllium (Be), Indium (In), and Osmium (Os).

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\mathrm{O}, \mathrm{O}^{2-}, \mathrm{F}

\mathrm{F}^{-}