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Oxidation state of an element in given compounds

This type of question, asked 4 times: 1 Feb 2023, 6 Apr 2023, 8 Apr 2023, 27 Jan 2024. All 4 questions below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    1 Feb 2023

    54
    Sum of oxidation states of bromine in bromic acid and perbromic acid is

  2. Question 2

    6 Apr 2023

    60
    In ammonium-phosphomolybdate, the oxidation state of Mo is  +\ ^{+}__

  3. Question 3

    8 Apr 2023

    147
    The sum of oxidation state of the metals in Fe(CO)5,VO2+Fe(CO)_{5},VO^{2 +} and WO3WO_{3} is___

  4. Question 4

    27 Jan 2024

    60
    From the given list, the number of compounds with +4 oxidation state of Sulphur _____ .
    SO3,H2SO3,SOCl2,SF4,BaSO4,H2 S2O7SO_{3},H_{2}SO_{3},SOCl_{2},SF_{4},BaSO_{4},H_{2}{\text{ }S}_{2}O_{7}