Final answer:
Isotopes are written in nuclide notation with their mass number as a superscript and atomic number as a subscript to the element's symbol. Examples include Carbon-14 (14C6), Uranium-235 (235U92), Oxygen-18 (18O8), and Sodium-22 (22Na11).
Step-by-step explanation:
Writing isotopes in nuclide notation involves stating the mass number (which is the sum of protons and neutrons) as a superscript to the left of the elemental symbol and the atomic number (the number of protons) as a subscript. For the isotopes provided:
- Carbon-14: 14C6
- Uranium-235: 235U92
- Oxygen-18: 18O8
- Sodium-22: 22Na11
Note that the atomic numbers (subscripts) are based on the element's position in the periodic table, where Carbon is 6, Uranium is 92, Oxygen is 8, and Sodium is 11.