Can someone help me please

Definitions:

Atomic Mass- mass of an atom. The atomic mass is approximately equal to total number of protons and neutrons.

Atomic number- Number of protons in the nucleus of an atom.

Element- a pure substance that can't be broken down by chemical means.

Table:

Hydrogen/1.008/1/1

Strontium/87.62/38/38

Palladium/106.42/46/46

Fluorine/18.998403163/9/9

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.