What is the atomic number and mass number of Helium?
Correct answer: A. A=4, Z=2
- A. A=4, Z=2
- B. A=2, Z=4
- C. A=1, Z=1
- D. A=3, Z=1
Explanation
The atomic number (Z) of helium is 2, and the mass number (A) of helium is 4.
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