When an element has Z=10 and 10 neutrons, what element and isotope are present?
A) ${ }_{10}^{21} \mathrm{Ne}$
B) ${ }_{10}^{20} \mathrm{Ne}$
C) ${ }_{20}^{10} \mathrm{Ca}$
D) ${ }_{10}^{10} \mathrm{Ca}$

Question

Quizplus · Accepted Answer

The element with Z=10 is Neon (Ne), and with 10 neutrons, the mass number (A) is the sum of protons (Z) and neutrons (N), which is 20. Therefore, the correct isotope is ${ }_{10}^{20} \mathrm{Ne}$.

When an Element Has Z=10 and 10 Neutrons, What Element 1021Ne{ }_{10}^{21} \mathrm{Ne}1021​Ne

When an Element Has Z=10 and 10 Neutrons, What Element ${ }_{10}^{21} \mathrm{Ne}$