What are the main features of modern periodic table?
Main features: Each column is called a group. All elements in a group have similar chemical and physical properties because they have the same number of outer electrons. Periods – In periodic table elements are arranged in a series of rows. Elements of the same period have the same number of electron shells.
What is the shortest period in the periodic table?
first period
What are the use of modern periodic table?
The organization of the periodic table can be used to derive relationships between the various element properties, and also to predict chemical properties and behaviours of undiscovered or newly synthesized elements.
How do we use the periodic table in everyday life?
Summary
- The table can be used to predict the properties of elements, even those that have not yet been discovered.
- Columns (groups) and rows (periods) indicate elements that share similar characteristics.
- The table makes trends in element properties apparent and easy to understand.
What is Period 7 on the periodic table?
The Actinide series contains elements with atomic numbers 89 to 103 and is the sixth group in the periodic table. The series is the row below the Lanthanide series, which is located underneath the main body of the periodic table.
How many periods and groups are present in the long form of periodic table?
The long form of modern periodic table consists of seven rows called periods and eighteen columns called groups.
What is the meaning of periodic table?
The periodic table is a tabular array of the chemical elements organized by atomic number, from the element with the lowest atomic number, hydrogen, to the element with the highest atomic number, oganesson. The atomic number of an element is the number of protons in the nucleus of an atom of that element.
How do you explain periodic table to a child?
The periodic table arranges the elements in rows and columns. In the rows, the elements are placed in order of their atomic number. The columns form groups of elements that have similar chemical properties. For example, certain gases are in one column and metals are in another.