Chemistry
Grade-9
Easy
Question
In the 6th period how many elements are present.
- 18
- 32
- 50
- 72
Hint:
32 elements
The correct answer is: 32
- There are 118 elements in periodic table arranged in 18 groups and 7 periods.
- Second and third period has 8 elements each.
- Fourth and fifth period has 18 elements each.
- Sixth and seventh period shows anomaly having 32 elements each.
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