There are carbons in the longest continuous chain of carbons in the molecule below.
Fill in the blank

n has four pairs of electrons in the valence shell, electrons repel one another ,n has 7 protons in its nucleus, and since n has 7 protons, it must fill the second shell, giving it 4 pairs of electrons. the electrons form 3 bonds and 1 lone pair of electrons. each pair of electrons repels the other pairs, so they are equally far apart.

so all of the above

no but i do not usually comment or use my voice that much when it comes to social media

it's c. elements are placed in rows based on how may valencies electrons have.