Question:
How many elements are present in 3rd period of the modern periodic table?
How many elements are present in 3rd period of the modern periodic table?
Updated On: Apr 5, 2025
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The Correct Option is B
Solution and Explanation
Correct answer: 8
Explanation:
The 3rd period of the modern periodic table contains 8 elements. These elements are from s-block and p-block, with the electron filling in the 3s and 3p orbitals.
The elements in the 3rd period are:
Sodium (Na), Magnesium (Mg), Aluminium (Al), Silicon (Si), Phosphorus (P), Sulfur (S), Chlorine (Cl), and Argon (Ar)
So, the number of elements in the 3rd period is 8.
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