" Speak of me as I am; nothing extenuate, nor set down aught in malice: A. then must you speak of one that loved not wisely but too well; B. Of one not easily jealous, but being wrought perplexed in the extreme

As the question is not included in this passage, I will provide a general explanation of what the passage means.

This passage illustrates the regret that Othello argues he feels over the death of his wife. Othello suffocated his wife Desdemona, who was completely innoceent, because of his blind jealousy. Upon his recovery from such impulsive actions, Othello laments his acts, and says that, even though he did not "love her wisely" he loved her "too well."

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.  

what is the question here. i think you messed up.