The nuclear symbol for uranium-235 should be written as o U-235.
233
92 U
235
143 U
OU

²³⁵₉₂U

Explanation:

The nuclear symbol of the nuclei is ²³⁵₉₂U.

The uranium nuclei has;

          mass number  = 235

          atomic number  = 92

To write the structure of the atom;

         The subscript before the symbol of the atom is the atomic number

        The superscript is the mass number

So;

      ²³⁵₉₂U is the symbol of the nuclei.

the leaf is an organ of a typical plant, and the main functions are to complete photosynthesis and allow the plant to exchange gas, just like how we have the respiratory system. leaves have the stomata, which collects maintains co2 and o2 levels. this is necessary for cell metabolism. the leaf also collects sunlight using chloroplasts. succinctly, leaves own a pivotal role in sustaining plant life.