Table of Contents
An introduction to the trends of periodic properties in Periodic Table
The periodic table is a chart that organizes the chemical elements according to their atomic number and chemical properties. The table is divided into periods and groups. The periods are numbered 1-7, and the groups are numbered 1-18.
The periodic table is based on the repeating patterns of the chemical elements’ properties. The properties that repeat are called periodic trends.
Periodic trends in the periodic table include:
-The atomic number (the number of protons in the nucleus)
-The atomic radius (the size of the atom)
-The ionization energy (the energy needed to remove an electron from an atom)
-The electron affinity (the energy released when an electron is added to an atom)
-The electronegativity (the ability of an atom to attract electrons to itself)
-The valence electrons (the electrons in the outermost energy level of an atom)
-The melting point (the temperature at which a solid turns into a liquid)
-The boiling point (the temperature at which a liquid turns into a gas)
-The density (the mass per unit volume)
-The state of matter (solid, liquid, or gas)
Some of the periodic trends are due to the way the electrons are arranged in the atoms of different elements. The electrons in the outermost energy level are called valence electrons. The number of valence electrons an element has determines its chemical properties.
Periodic Trends of Properties of Elements In Periodic Table
The periodic table is a chart that shows how the chemical and physical properties of elements change as you go from left to right across a row (period). The properties of elements change because the number of protons in the nucleus of an atom (atomic number) increases as you go from left to right.
