<span>In general, as you move across a row in the periodic table, B. atomic radius decreases. This is because there is a stronger attraction between outermost electrons and nucleus, which is why the radius between them becomes smaller. </span>
<span>The Earth’s internal "((HEAT))" source provides the energy for our dynamic planet, providing it with the driving force for on-going disastrous events such as earthquakes and volcanic eruptions and for plate-tectonic motion. </span>
