Question:
Identify the correct decreasing order of relative tendency of metals to undergo oxidation from the following.
Identify the correct decreasing order of relative tendency of metals to undergo oxidation from the following.
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Remember that metals like magnesium have a higher tendency to oxidize because they have a low ionization energy and readily lose electrons.
Updated On: Feb 4, 2026
- Cr>Al>Mg>Fe
- Mg>Al>Cr>Fe
- Al>Fe>Cr>Mg
- Fe>Cr>Al>Mg
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The Correct Option is B
Solution and Explanation
Step 1: Understanding oxidation tendency.
The question asks about the tendency of metals to undergo oxidation. The greater the tendency to lose electrons (oxidation), the more easily a metal will undergo oxidation. Magnesium (Mg) has the highest tendency to oxidize, followed by aluminum (Al), chromium (Cr), and finally iron (Fe).
Step 2: Analyzing the options.
(A) Cr>Al>Mg>Fe: Incorrect. This is not the correct order based on the oxidation tendencies.
(B) Mg>Al>Cr>Fe: Correct — This follows the correct order, with magnesium being the most easily oxidized.
(C) Al>Fe>Cr>Mg: Incorrect. This order places magnesium at the end, which is wrong.
(D) Fe>Cr>Al>Mg: Incorrect. This is the reverse order and does not reflect the actual tendency of these metals to oxidize.
Step 3: Conclusion.
The correct order is (B) Mg>Al>Cr>Fe, where magnesium has the highest oxidation tendency.
The question asks about the tendency of metals to undergo oxidation. The greater the tendency to lose electrons (oxidation), the more easily a metal will undergo oxidation. Magnesium (Mg) has the highest tendency to oxidize, followed by aluminum (Al), chromium (Cr), and finally iron (Fe).
Step 2: Analyzing the options.
(A) Cr>Al>Mg>Fe: Incorrect. This is not the correct order based on the oxidation tendencies.
(B) Mg>Al>Cr>Fe: Correct — This follows the correct order, with magnesium being the most easily oxidized.
(C) Al>Fe>Cr>Mg: Incorrect. This order places magnesium at the end, which is wrong.
(D) Fe>Cr>Al>Mg: Incorrect. This is the reverse order and does not reflect the actual tendency of these metals to oxidize.
Step 3: Conclusion.
The correct order is (B) Mg>Al>Cr>Fe, where magnesium has the highest oxidation tendency.
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