JEE Main 2023 · ChemistryNumerical answerNumerical valueEasyCalculation

JEE Main 8 April 2023, Shift 2, Chemistry Q89

Question 89 of 90 in this shift, Chemistry question 29 of 30, Section B.

The sum of oxidation state of the metals in

\mathrm{Fe(CO)_5}

\mathrm{VO^{2+}}

and

\mathrm{WO_3}

is ____________.

Official answer

NTA final key.

Chapter: The d- and f-Block Elements
Topic: d-Block Elements
Idea tested: Oxidation State Trends

Same idea in other shifts

Asked 4× in all

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.