Isotopic notation of phosphorus-29 is [tex]_{15} ^{29} P[/tex]
Explanation:
Isotopes are atoms with equal number of protons but different number of neutrons at its nucleus.
The isotopic notation for any element can be written as [tex]_{Z} ^{A} X[/tex] where X represents the chemical symbol ,A represents mass number and Z represents atomic number
The atomic number for phosphorus is 15
Isotope's mass number for phosphorus-29 is 29
The chemical symbol for phosphorus is P
Hence Isotopic notation is [tex]_{15} ^{29} P[/tex]