From moving from left to right the atomic size decreases.In case of Lanthanides lanthanide contractions occur and this results from the poor shielding of nuclear charge by 4f electrons,the 6f electrons are drawn towards the nucleus ,thus resulting in smaller atomic radius.
Rare earth metals are located in the lanthanide series of the periodic table, which is a group of elements in the sixth and seventh periods.
The relationship between elements and periods according to the periodic law is that elements are arranged in periods based on their atomic number and properties. Elements in the same period have the same number of electron shells, while elements in the same group have similar chemical properties.
Horizontal rows are called periods. There are 7 periods in periodic table.
Periods on the periodic table are rows that categorize elements based on the number of electron shells they have. There are seven periods in total, each representing a different energy level. Elements in the same period have similar properties due to their electron configurations.
Periods in the periodic table are horizontal rows that categorize elements based on the number of electron shells they have. Each period represents a new energy level for the elements. The periods help organize the elements by grouping together those with similar properties and characteristics.
Rare earth metals are located in the lanthanide series of the periodic table, which is a group of elements in the sixth and seventh periods.
The vertical columns of the periodic table are arranged to contain elements that have similar chemical and physical properties.The two rows at the bottom (called the Lanthanide and Actinide series) are elements that would all fit into group IIIB, in periods (horizontal rows) 6 and 7. since there is only one spot on the chart for all the elements in each series, they are listed separately at the bottom of the table.
The lanthanide elements are in a row at the bottom of the main part of most tables, this entire row being an extension of column 3 of the sixth period.
period contain elements with electrons in s p d and f orbitals
The elements on the periodic table are separated into periods based on the number of electron shells they have. Elements in the same period have the same number of electron shells, which influences their chemical properties and reactivity.
There are 18 periods in the periodic table. The periods are divided according to the chemical properties of elements. Elements in a group have similar properties.
The early periods have less elements because they are filling up energy levels which hold only a few electrons. The later periods contain elements with electrons in levels with a greater capacity.
There are 18 elements in period 4.
there are 32 elements in period 6.
The relationship between elements and periods according to the periodic law is that elements are arranged in periods based on their atomic number and properties. Elements in the same period have the same number of electron shells, while elements in the same group have similar chemical properties.
Horizontal rows are called periods. There are 7 periods in periodic table.
The periodic table of Mendeleev has 18 groups and 7 periods.