Which of the following metals is oxidized by calcium ions? 1. potassium 2. zinc 3. iron 4. lead

Question:

Which of the following metals is oxidized by calcium ions?

1. potassium

2. zinc

3. iron

4. lead

Oxidation:

Oxidation is the loss of electron and reduction is the gain of an electron. In a chemical reaction, one of the atoms get oxidized and the other gets reduced. The oxidized atom loses the electron and the reduced atom gains.

Answer and Explanation:

Following is the reactivity series of metals:

potassium (high reactive) > sodium > calcium > magnesium > aluminum > zinc > iron > tin > lead > copper > silver > gold > platinum (least reactive).

As per the reactive series, potassium is the most reactive of the given options and calcium is close to it. More reactive a metal, more is the tendency to form a cation (positive ion) by the loss of an electron. The tendency of the potassium to form a positive ion is more than any in the given series and Zinc, iron and lead are least in the reactivity.

Thus, potassium gets oxidized by the calcium ions.


Learn more about this topic:

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Metals on the Periodic Table: Definition & Reactivity

from General Studies Science: Help & Review

Chapter 27 / Lesson 45
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