Answer
a. $^{235}_{92}U$
b. $^{52}_{23}V$
c. $^{32}_{15}P$
d. $^{144}_{54}Xe$
Work Step by Step
1. Find "Z" for each element in a periodic table.
a. Z = 92
b. Z = 23
c. Z = 15
d. Z = 54
2. The mass number, "A", is the number after the name of the element, therefore, we have all informations. Write the symbol using this form: $^A_ZX$
a. $^{235}_{92}U$
b. $^{52}_{23}V$
c. $^{32}_{15}P$
d. $^{144}_{54}Xe$
