Question

structure of modern periodic table​

Answer 1

Answer:

structure of the modern periodic table is

Explanation:

the modern periodic table is arranged in the increasing order of atomic number

Answer 2

Answer:

Here's your answer....

Explanation:

• The modern periodic table contains seven horizontal rows are called the periods 1 to 7.
• Similarly, the eighteen vertical columns in this table are groups 1 to 18.
• The arrangement of the periods and groups results into formation of boxes.
• Atomic numbers are serially indicated in the upper part of these boxes.
• Each box corresponds to the place for one element.
• Apart from these seven rows, two rows are shown separately at the bottom of the periodic table.
• These are called lanthanide and actinide series, respectively.
• There are 118 in the periodic table including the two series.
• It means that there are 118 places for elements in the modern periodic table.

Hope this helps you....