An element has Z=38 and 50 neutrons, what element and isotope is it?
A) ${ }_{38}^{50} \mathrm{Sr}$
B) ${ }_{38}^{88} \mathrm{Sr}$
C) ${ }_{50}^{38} \mathrm{Sr}$
D) ${ }_{50}^{88} \mathrm{Sr}$

Question

Quizplus · Accepted Answer

The element with atomic number (Z) 38 is Strontium (Sr). The mass number (A) is the sum of protons and neutrons, which is 38 + 50 = 88, making the correct isotope ${ }_{38}^{88} \mathrm{Sr}$.

An Element Has Z=38 and 50 Neutrons, What Element and Isotope