The isotope ²⁰Ne has an atomic number of 10. The nucleus of this isotope contains _____ protons and _____ neutrons. A) 9; 11 B) 20; 20 C) 11; 9 D) 10; 10

Question

Quizplus · Accepted Answer

The atomic number, which is 10 for this isotope, indicates the number of protons, which is 10. The mass number (²⁰Ne) suggests a total of 20 nucleons (protons + neutrons). With 10 protons, there must be 10 neutrons to make the total 20.

The Isotope 20Ne Has an Atomic Number of 10

The Isotope ²⁰Ne Has an Atomic Number of 10