Question

Which element releases electrons most easily (lowest ionization enthalpy)?

• A. Zinc
• B. Cadmium
• C. Mercury
• D. All equally likely

Hint:

Elements with lower ionization enthalpies tend to release electrons more easily, as less energy is needed to remove an electron.

Answer 1

The Correct Option is A

Step 1: Understanding ionization enthalpy.
Ionization enthalpy refers to the energy required to remove an electron from an atom in its gaseous state. The lower the ionization enthalpy, the more easily an element releases an electron.
Step 2: Comparison of elements.
- Zinc (Zn) is in Group 12 of the periodic table and has a relatively low ionization enthalpy compared to other elements listed. - Cadmium (Cd) and Mercury (Hg), being heavier transition metals, have higher ionization enthalpies than Zinc.
Step 3: Conclusion.
Thus, Zinc releases electrons most easily, corresponding to option (A).