Question

explain the characteristics of element along the group and periods in modern periodic table​

Answer 1

Answer:

Elements are arranged in the increasing order of atomic numbers. Elements in the modern periodic table are arranged in 7 periods and 18 groups. Horizontal rows are called periods and vertical columns are called groups. Elements are placed in periods based on the number of shells in their atoms..

Answer 2

Answer:

The periodic table is an arrangement of the elements in order of their atomic numbers so that elements with similar properties appear in the same vertical column or group. ... The atomic number of each element is written above the symbol. A period is a horizontal row of the periodic table.