Chemistry
Grade-9
Easy
Question
Each element is unique based on its number of protons, also known as the
- Atomic mass
- Valence number
- Atomic symbol
- Atomic number
Hint:
Each element has different atomic number.
The correct answer is: Atomic number
- There are 118 elements in Mendeleev's periodic table.
- Each elements is assigned a particular address as atomic number.
- Each element is unique based on its number of protons, also known as the atomic number.
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