In the electrochemical series, which element is the best reducing agent? (2022)

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Question: In the electrochemical series, which element is the best reducing agent? (2022)

Options:

Correct Answer: Li

Exam Year: 2022

Solution:

Li is the best reducing agent among the given alkali metals due to its low ionization energy.

In the electrochemical series, which element is the best reducing agent? (2022)

In the electrochemical series, which element is the best reducing agent? (2022)

Step 1: Understand what a reducing agent is. A reducing agent is a substance that donates electrons to another substance, reducing it while itself getting oxidized.
Step 2: Look at the electrochemical series, which lists elements based on their ability to lose electrons.
Step 3: Identify the alkali metals in the series. These include lithium (Li), sodium (Na), potassium (K), etc.
Step 4: Compare the ionization energies of these alkali metals. Ionization energy is the energy required to remove an electron from an atom.
Step 5: Recognize that lower ionization energy means it is easier for the element to lose an electron and act as a reducing agent.
Step 6: Note that lithium (Li) has the lowest ionization energy among the alkali metals.
Step 7: Conclude that since Li has the lowest ionization energy, it is the best reducing agent among the alkali metals.

Electrochemical Series – A ranking of elements based on their standard electrode potentials, indicating their ability to act as oxidizing or reducing agents.
Reducing Agent – A substance that donates electrons in a chemical reaction, thereby reducing another substance.
Ionization Energy – The energy required to remove an electron from an atom or ion, which influences an element's ability to act as a reducing agent.