Question

the reason for the less reactivity of coinage metals Cu,Ag and Au is
a)low reduction potential
b)high reduction potential
c)high oxidation potential
d)none of these​

Answer 1

Answer:

Copper, Ag and Au are known as coinage metals because they were used to make coins. All the metals are noble w.r.t. chemical activity.

the correct option is (a)

Answer 2

ANSWER:-

• The reason for the less reactivity of coinage metals Cu, Ag and Au is the high reduction potential.

• b)high reduction potential is the correct option

EXPLANATION:-

• Copper (Cu), Silver( Ag) and Gold(Au) are called coinage metals because they were used to make coins.

• For losing 2 electrons, the elements like Cu, Ag and Au would require to lose a d-electron from a completed d-shell, which is difficult but for group 12, two s valance electrons can be lost, and the complete d-shell is sustained.

• A list of some metals arranged in a column in the decreasing order of their reactivity is called the activity series or reactivity series of metals.

• An element (metal) lying high in the activity series can reduce elements (metals) lying below it from their solutions.

• More reactive metals reduce less reactive metals. But less reactive metals cannot reduce more reactive metals because they have a high reduction potential

#SPJ2