JAMB - Chemistry (2024 - No. 90)
Which of the following represents an order of increasing reactivity?
Au < Cu < Sn < Fe < Ca
Ca < Fe < Sn < Cu < Au
Au < Cu < Fe < Sn < Ca
Ca < Sn < Fe < Cu < Au
설명
The order of reactivity of metals, from most to least reactive, is:
- Potassium: Most reactive and easily forms positive ions
- Sodium: Second most reactive
- Lithium: Third most reactive
- Calcium: Fourth most reactive
- Magnesium: Fifth most reactive
- Aluminum: Sixth most reactive
- Zinc: Seventh most reactive
- Iron: Eighth most reactive
- Tin: Ninth most reactive
- Lead: Tenth most reactive
- Hydrogen: Eleventh most reactive
- Copper: Twelfth most reactive
- Silver: Thirteenth most reactive
- Gold: fourteenth most reactive
- Platinum: Fifteenth most reactive