Answer:
Na and K
Explanation:
Every elements in the same group have similar chemical characteristics
If you mean periodic table then it would be atomic number
The options that are incorrect are A) representation of a complete set of a cell's polypeptides, B) the complete set of an organism's polypeptides, C) the complete set of a species' polypeptides, and D) karyotype, which makes E) the complete set of an organism's genes the correct answer to what defines a genome.