I know what the atomic number of the atom is but I don’t know what the number of electrons is how would you respond

In the atom there is the atomic number, which you know represents the number of protons in the atom, and those protons are located in the middle of the atom.
Electrons are negatively charged which float around the protons in the middle.

Knowing the atomic number will give you the protons in the atom, but also knowing that number you can find the electron number because the protons will most always match the number of electrons.

For example; Lithium’s Atomic number is 3.

Atomic Number = Protons and Electrons

Protons: 3

Electrons: 3

Hope this helps :)

Iagree the cover letter is most important it tells someone what you intend on doing