Question

The coinage metal which has the least ionization enthalpy

Answer 1

Answer:

The coinage metals—copper, silver, and gold—occur naturally (like ... low values of the second and (for Au) third ionization energies.

hope you get it...

Answer 2

Answer:
The correct answer is silver
Explanation:-

• Coinage metal are copper , gold and silver .
• The minimum energy required to remove an electron from is valence shell is known as ionization enthalpy.

• The ionization energy of element is decreased down the group as because the distance between the valence electron and the nucleus increases .
• Due to poor shielding effect of 4f electron the ionization energy of of gold is higher than Copper and copper has high ionization enthalpy than silver .
  
  Hence silver will have least ionization enthalpy.
  
  #SPJ3