Electron dot structure for NBr↓3

(6 dots) Br (one line)  N (one line) Br (6 dots)

                              (one line)

                              Br (6 dots)

Explanation:

Add valence electrons

5+3(7) = 26

Subtract 26 - 24 = 2  (next multiple of 8)

This tells us the number electrons on central N atom.

Next, know that N like 3 bonds, while Br likes 1 bond. (hence 1 line)

Now, Br wants 8 electrons, so add 6 dots.

Note: one line are bond is equal to 2 electrons.

- Hope that helped! Please let me know if you want this broken down into simpler terms or need a further explanation.

that's what i got you can count the number of atoms

the answer is b because, investigating whether another species of moth also drinks tears might be interesting, but it would not directly explain why this species of moth does.

to explain why this species of moth drinks tears, the scientist could ask: "what nutrients that moths need are in elephant tears? "

the scientist could experiment with moth repellent or oter ways to keep the moths away, but that would not answer his original question.