ChemistryOxidation and reductionWAEC
The oxidation number of chromium in K₂Cr₂O₇ is
Show answer
Answer: C. +6
2(+1) + 2Cr + 7(−2) = 0, so Cr = +6.
An AdmitMe practice question, written for the WAEC syllabus. Not an official past question.
Chemistry · Oxidation and reduction
Practise Oxidation and reductionA timed set on this topic, freeAsk the AI TutorExplain it another way
Discussion
Ask about a step, share a shortcut, or explain it your way. Be kind; no links.
No comments yet. Be the first to explain it.