JAMB - Chemistry (1994 - No. 34)
Which of the following is the correct order of decreasing activity of the metals Fe, Ca, Al and Na?
Fe> Ca> Al> Na
Na> Ca> Al> Fe
Al> Fe> Na> Ca
Ca> Na> Fe>, Al
Paaiškinimas
The order of reactivity of metals is as follows, Potassium > Sodium > Lithium > Calcium > Magnesium > Aluminium > Zinc > Iron > Copper > Silver > Gold.