Shubham Jha - Class 11 & 12
The number of elements in the 5th period of the periodic table is
Anonymous Quiz
3
9
18
21
◄❥͜͡⃟⃝🥀𓆩〭〬×⃪⃕͜𝑨𝑵𝑨𝑴𝑰𝑲𝑨⛦⃕͜𝑶𝑷─⃛͢𓆪, edited  

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