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D and F Block Elements question

2023 · 15 Apr · Shift 1 · Q18
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D and F Block Elements question

2023 · 15 Apr · Shift 1 · Q18

JEE MainChemistryD and F Block ElementsNumerical+4 / −1
In Chromyl chloride, the oxidation state of chromium is (+)‾(+)\underline{\hspace{2cm}}(+)​.
Numerical answer
View written solutionFree

Correct answer: 6

  1. Write the formula of chromyl chloride

    Chromyl chloride has the formula: CrO2Cl2\mathrm{CrO_2Cl_2}CrO2​Cl2​

  2. Assign usual oxidation states

    • Oxygen usually has oxidation state −2-2−2.
    • Chlorine in metal chlorides usually has oxidation state −1-1−1.

    Let the oxidation state of chromium be xxx.

  3. Set up the oxidation state equation

    Since the molecule is neutral, x+2(−2)+2(−1)=0x + 2(-2) + 2(-1) = 0x+2(−2)+2(−1)=0

  4. Solve for xxx

    x−4−2=0x - 4 - 2 = 0x−4−2=0 x−6=0x - 6 = 0x−6=0 x=+6x = +6x=+6

  5. Final answer

    The oxidation state of chromium in chromyl chloride is: +6+6+6

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