Question

an isotope contains 9 protons and 10 neutrons. construct the symbol for the isotope. tap on the parts of the symbol to enter or change the contents

Explanation:

Step1: Determine the atomic number (Z)

The atomic number (Z) is equal to the number of protons. Given there are 9 protons, so \( Z = 9 \). The element with atomic number 9 is fluorine (F).

Step2: Calculate the mass number (A)

The mass number (A) is the sum of protons and neutrons. So \( A = 9 + 10 = 19 \).

Step3: Construct the isotope symbol

The isotope symbol is written as \( \ce{^{A}_{Z}X} \), where X is the element symbol. Substituting the values, we get \( \ce{^{19}_{9}F} \).

Answer:

\( \ce{^{19}_{9}F} \)