7-3 Periodic trends Activity

• Atomic radii trend decreases as you move from left to right. This is because the left of the table contains metals with a weak attraction for electrons. Meaning the electrons radius is farther away from the nucleus this is what makes it easier for metals to loose electrons.The heavist elements in a period have the smallest radii because the electrons are more attracted and closer to a larger mass pulling the electron shells closer.
• Elements at the bottom  of a group have the lowest electronegativity because it is the most metallic having the smallest ionization energy Making it easiest for the element to loose electrons.
• The non-metals are harder to take an electron away than metals because non-metals want to gain electrons, whereas metals want to loose their electrons.
• Trends are referred to as periodic because it represents a pattern that happens in the elements throughout a certain period hence the "periodic table".