Final answer:
The isotope of uranium with 144 neutrons is represented as U-236 or ^236U, with the mass number calculated by adding 92 protons to 144 neutrons.
Step-by-step explanation:
The isotope of uranium with 144 neutrons can be represented by its chemical symbol and mass number. Uranium's atomic number, which is the number of protons, is 92 (from the periodic table). The mass number of an isotope is the sum of its protons and neutrons. To determine the mass number of the uranium isotope with 144 neutrons, you simply add the number of protons (92) to the number of neutrons (144), resulting in a mass number of 236.
Therefore, the chemical symbol for this uranium isotope is U-236 or in the nuclear symbol format, ^236U. In this format, the mass number (236) is written as a superscript to the left of the element symbol (U).