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Match each atomic number to its element.
1. Which element has the atomic number 1?
- Aluminium
- Silicon
- Hydrogen
- Zinc
Atomic number 1 belongs to Hydrogen (symbol H). An element's atomic number equals the number of protons in its nucleus.
2. Which element has the atomic number 2?
- Potassium
- Lithium
- Zinc
- Helium
Atomic number 2 belongs to Helium (symbol He). An element's atomic number equals the number of protons in its nucleus.
3. Which element has the atomic number 3?
- Calcium
- Chlorine
- Lithium
- Lead
Atomic number 3 belongs to Lithium (symbol Li). An element's atomic number equals the number of protons in its nucleus.
4. Which element has the atomic number 6?
- Silicon
- Magnesium
- Chlorine
- Carbon
Atomic number 6 belongs to Carbon (symbol C). An element's atomic number equals the number of protons in its nucleus.
5. Which element has the atomic number 7?
- Sodium
- Silver
- Nitrogen
- Neon
Atomic number 7 belongs to Nitrogen (symbol N). An element's atomic number equals the number of protons in its nucleus.
6. Which element has the atomic number 8?
- Oxygen
- Silver
- Cobalt
- Titanium
Atomic number 8 belongs to Oxygen (symbol O). An element's atomic number equals the number of protons in its nucleus.
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