Trends

Periodic trends generally go along a diagonal line from the bottom left to the top right, as Helium is the most stable element, it rarely reacts. Periodic trends apply to ionization energy to electronegativity. In short, the smallest, least reactive, and most likely elements to draw electrons toward itself when in an bod are at the top, and on the right. while they get larger and more reactive, more likely to give electrons and with less density near the bottom. Its really simple, imagine a diagonal line across the periodic table, and all trends should stick to it.