group 18 is exception so argon is bigger than sodium

aawart=7 warg=18, this modern periodik table

this is the modern periodic tabel

This is a Modern Periodic table which in 18 Horizontal and 8 Vertical group

this is mordern periodic table

what is the question we know this is periodic table sis

This is the modern periodic table

This is the modern periodic table. Theperiodic table, also known as theperiodic table of elements, is a tabular display of thechemical elements, which are arranged byatomic number,electron configuration, and recurringchemical properties. The structure of the table showsperiodic trends. The seven rows of the table, calledperiods, generally havemetalson the left andnon-metalson the right. The columns, calledgroups, contain elements with similar chemical behaviours. Six groups have accepted names as well as assigned numbers: for example, group 17 elements are thehalogens; and group 18 are thenoble gases. Also displayed are four simple rectangular areas orblocksassociated with the filling of differentatomic orbitals.

The elements from atomic numbers 1 (hydrogen) through 118 (oganesson) have been discovered or synthesized, completing seven full rows of the periodic table. The first 94 elements all occur naturally, though some are found only in trace amounts and a few were discovered in nature only after having first been synthesized. Elements 95 to 118 have only been synthesized in laboratories ornuclear reactors. The synthesis of elements having higher atomic numbers is currently being pursued: these elements would begin aneighth row, and theoretical work has been done to suggest possible candidates for this extension. Numerous syntheticradionuclidesof naturally occurring elements have also been produced in laboratories.

The organization of the periodic table can be used to derive relationships between the various element properties, and also to predict chemical properties and behaviours of undiscovered or newly synthesized elements. Russian chemistDmitri Mendeleevpublished the first recognizable periodic table in 1869, developed mainly to illustrate periodic trends of the then-known elements. He also predicted some properties ofunidentified elementsthat were expected to fill gaps within the table. Most of his forecasts proved to be correct. Mendeleev's idea has been slowly expanded and refined with thediscovery or synthesis of further new elementsand the development of new theoretical models to explain chemical behaviour. The modern periodic table now provides a useful framework for analyzingchemical reactions, and continues to be widely used inchemistry,nuclear physicsand other sciences.

Theperiodic table, also known as theperiodic table of elements, is a tabular display of thechemical elements, which are arranged byatomic number,electron configuration, and recurringchemical properties. The structure of the table showsperiodic trends. The seven rows of the table, calledperiods, generally havemetalson the left andnon-metalson the right. The columns, calledgroups, contain elements with similar chemical behaviours. Six groups have accepted names as well as assigned numbers: for example, group 17 elements are thehalogens; and group 18 are thenoble gases. Also displayed are four simple rectangular areas orblocksassociated with the filling of differentatomic orbitals.

The elements from atomic numbers 1 (hydrogen) through 118 (oganesson) have been discovered or synthesized, completing seven full rows of the periodic table.[1][2]The first 94 elements all occur naturally, though some are found only in trace amounts and a few were discovered in nature only after having first been synthesized.[n 1]Elements 95 to 118 have only been synthesized in laboratories ornuclear reactors.[3]The synthesis of elements having higher atomic numbers is currently being pursued: these elements would begin aneighth row, and theoretical work has been done to suggest possible candidates for this extension. Numerous syntheticradionuclidesof naturally occurring elements have also been produced in laboratories.

The organization of the periodic table can be used to derive relationships between the various element properties, and also to predict chemical properties and behaviours of undiscovered or newly synthesized elements. Russian chemistDmitri Mendeleevpublished the first recognizable periodic table in 1869, developed mainly to illustrate periodic trends of the then-known elements. He also predicted some properties ofunidentified elementsthat were expected to fill gaps within the table. Most of his forecasts proved to be correct. Mendeleev's idea has been slowly expanded and refined with thediscovery or synthesis of further new elementsand the development of new theoretical models to explain chemical behaviour. The modern periodic table now provides a useful framework for analyzingchemical reactions, and continues to be widely used inchemistry,nuclear physicsand other sciences.