Question

Give reason why the rate of reaction is fastest in case of magnesium but it progressively decreases in the case of aluminium, zinc and iron

Answer 1

heya!

here's the reactivity series'of elements...
K
Na
Ca
Mg
Al
Zn
Fe
Sn
Pb
(H)
Cu
Hg
Ag
Pt
Au

this reactivity series defines...the reactivity of metals in decreasing order...
therefore.. According to this..
We can see that magnesium is placed above aluminium..zinc..etc..

therefore..the rate of reaction is the fastest in the magnesium..
than...
zinc..
Aluminium
and other metals..

HOPE THIS HELPS YOU

Answer 2

Bcz mannerisms is more reactive than Al and other given elements