Chemistry
Grade-9
Easy
Question
The atomic number of this Na is
- 23
- 11
- 22
- 16
Hint:
Atomic number of Na is 11.
The correct answer is: 11
- Mendeleev periodic table has 118 elements arranged in 18 groups and 7 periods.
- Moving from left to right atomic number increases by 1.
- Atomic number of sodium is 11.
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