Answer:
[tex]_{6}^{11}\text{C} \text{ and } _{6}^{13}\text{C}[/tex]
Explanation:
The general atomic symbol for an isotope is [tex]_{Z}^{A}\text{X}[/tex]
C has atomic number Z = 6, so it has six protons (p).
The mass number A =the number of protons plus neutrons = p + n
(1) Five neutrons
A = 6 + 5 = 11
The atomic symbol is [tex]_{6}^{11}\text{C}[/tex].
(2) Seven neutrons
A = 6 + 7 = 13
The atomic symbol is [tex]_{6}^{13}\text{C}[/tex].
