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Question

The number of elements in 5th and 6th period of periodic table are respectively:


A
8, 18
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B
18, 18
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C
18, 32
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D
18, 28
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Solution

The correct option is C 18, 32
The first period consists of only two elements – Hydrogen and Helium. The 2nd and 3rd period consists of 8 elements each. On the other hand, the 4th and 5th consists of 18 elements each while the sixth period consists of 32 elements.

Hence, the correct option is $$\text{C}$$

Chemistry

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