give the number of elements in 2 and 5 period in modern periodic table
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31
Number of elements in 2nd period are 8.
Number of elements in 5th period are 18.
Hope it helps!
Number of elements in 5th period are 18.
Hope it helps!
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Answer:
Number of element in 2nd period are 8 & number of element in 5th period are 18 in modern periodic table...
Explanation:
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