Formula deep page
Reactivity Series (decreasing)
K > Na > Ca > Mg > Al > Zn > Fe > Pb > H > Cu > Ag > Au
This formula belongs to the chapter "Metals and Non-metals" in Class 8 Science. Use it after identifying the right variables, matching the chapter context, and writing the substitution clearly.
How to use it
- Identify the quantity you need to find.
- Check the related variables and units from the question.
- Substitute values carefully into the formula.
- Simplify step by step and write the final statement.
Worked cue
Mg displaces Fe from FeSO₄. Cu CANNOT displace Fe (lower in series)
Rule note: More reactive metal displaces less reactive from solution