Question

part a
how many protons are found in ne - 21?
10
0
11
21
none of the above
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Explanation:

Neon (Ne) has an atomic number of 10. The atomic number represents the number of protons in an atom. The number after the element symbol (21 in Ne - 21) is the mass number (protons + neutrons). So, regardless of the mass number, the number of protons in Ne is 10.

Answer:

10