Question:
The atomic number of magnesium is 12. What is its valency?
The atomic number of magnesium is 12. What is its valency?
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The valency of an element is the number of electrons it gains, loses, or shares to achieve a stable electron configuration, usually corresponding to the nearest noble gas.
Updated On: Oct 28, 2025
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The Correct Option is B
Solution and Explanation
Magnesium has an atomic number of 12, meaning it has 2 electrons in its outermost shell. It loses these 2 electrons to form a stable ion, making its valency 2.
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