Which item would react most rapidly if touched by a match?

a log

sawdust

small twigs

tree branches

sawdust

Explanation:

I think so u have a google in ur mobile duhh nah just kidding may be its correct

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