Question

Which period is known as the incomplete period in the modern periodic table?

Answer 1

• The modern periodic table is an arrangement of all the elements known in accordance with their increasing atomic number and recurring chemical properties.
• It is a tabular display of the chemical elements which consists of horizontal rows called periods and vertical columns are called groups.
• The seventh period of the modern periodic table was considered incomplete.
• The properties of most of the elements from this period have not been studied properly.
• Also, these elements are unstable, and very less information is available about these elements.