how many elements are in the periodic table

The modern periodic table currently contains 118 confirmed chemical elements. These elements are arranged according to their atomic number, electron configuration, and chemical properties.

The first element in the periodic table is Hydrogen with atomic number 1, and the last known element is Oganesson with atomic number 118.

The elements are divided into:

• Metals

• Non-metals

• Metalloids

The periodic table is organized into:

• 7 periods (horizontal rows)

• 18 groups (vertical columns)

Classification of Elements:

Category	Examples
Metals	Iron, Copper
Non-metals	Oxygen, Nitrogen
Metalloids	Silicon, Boron

Scientists continue research to discover new synthetic elements through nuclear reactions and laboratory experiments.

Importance of the Periodic Table:

• Helps study chemical properties

• Shows relationship between elements

• Useful in chemistry and scientific research

• Helps predict behavior of elements

In conclusion, the periodic table currently has 118 elements, systematically arranged to help scientists understand and study chemical elements efficiently.