Question

States even characteristics of long form of periodic table.

Answer 1

Long-form of the periodic table:

• The modern periodic table is also known as the long form of the periodic table.
• A modern periodic table is the arrangement of elements in the increasing order of atomic number in a tabular form.

Characteristics of the long form of the periodic table:

• In a long-form periodic table, elements are arranged in the increasing order of their atomic number.
• The vertical column in the periodic table is called groups and horizontal rows are called periods.
• There are 7 periods and 18 groups in the long-form periodic table.
• Groups are denoted by Roman numbers.
• In a long-form periodic table, elements are arranged in s, p, d and f blocks.
• The number of valence electrons of elements shows periodicity and chemical properties show the corresponding periodicity.
• Inert gases are placed on the extreme right side of the periodic table.