Get Periodic Trends Are Certain Patterns That Describe Specific Aspects Of The Elements In The Periodic

Periodic trends. The tendencies of certain properties to increase or decrease as you move across a period or down a group. - A.k.a. patterns on the periodic table.

Periodic trends are observable patterns in the properties of an element that are dependent on its position in the Periodic Table. These trends have allowed scientists in the past to predict certain characteristics of unknown elements.

Periodic Trend The atomic radius of atoms generally decreases from left to right across a period. There are some small exceptions, such as the oxygen radius being slightly greater than the nitrogen radius. Within a period, protons are added to the nucleus as electrons are being added to the same principal energy level.

There are three factors that help in the prediction of the trends in the periodic table: number of protons in the nucleus, number of energy levels, and the shielding effect. The atomic radii increase from top to the bottom in any group.

Atomic size increases down a group. The increasing trend occurs because as you go down a group more energy levels cause the atom to be larger. Shielding also affects the size; the electrons in lower energy levels cause less pull to those electrons outside of it.

When the chemical elements are thus arranged, there is a recurring pattern called the “periodic law” in their properties, in which elements in the same column (group) have similar properties.

Periodic trends are patterns in elements on the periodic table. Major trends are electronegativity, ionization energy, electron affinity, atomic radius, and metallic character.

Periodic trends are specific patterns that are present in the periodic table that illustrate different aspects of a certain element, including its size and its electronic properties.