The shape of which continental coastlines provides evidence for the continental drift hypothesis.
a. north america and australia
b. south america and eurasia
c. north america and eurasia
d. south america and africa

Asingle atom of an element has 21 neutrons, 20 electrons, and 20 protons. which element is it? ok o z

Write a net ionic equation to show that hydrofluoric acid, behaves as an acid in water.

Write a brief passage describing a neutral atom of nitrogen-14 (n-14). describe the number of protons, neutrons, and electrons in the atom, where each type of particle is located, and how the terms atomic number, mass number, and atomic mass are related to the particles. use the periodic table to you. 14 protons and eletrons since its a neutral atom