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How lanthanide contraction controls the atomic sizes of elements of 6th and 7th periods?
Wiki User
∙ 10y ago
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.
Wiki User
∙ 10y ago
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The inner transition elements are also known as?
The inner transition elements are most commonly known as lanthanides and actinides. They are all f-block metals in the sixth and seventh periods of the Periodic Table of Elements.
What are horizontal rows of elements in the periodic table?
The horizontal rows of elements in the periodic table are called periods.
What are periods on the periodic table of elements?
The Periods are the horizontal rows on the periodic table.
How many elements occur in each of the first three periods or the periodic table?
There are 2 elements in the first period, 8, 8 elements in 2nd and 3rd periods respectively,
What are the differences between groups and periods?
Groups consist of elements listed in the same column. These elements share similar chemical properties, such as number of valence electrons. Periods are the rows of elements. These elements do not share chemical properties, as periods are organized by increasing atomic number (number of protons).
Why where the lanthanide and actinide elements droped out of order on the periodic tabel?
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 inner transition elements are also known as?
The inner transition elements are most commonly known as lanthanides and actinides. They are all f-block metals in the sixth and seventh periods of the Periodic Table of Elements.
Why are the elements on the periodic tables separated into periods?
Periods are types of elements.
What are horizontal rows of elements in the periodic table?
The horizontal rows of elements in the periodic table are called periods.
How many peroids are in the periodic table of elements?
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.
Why some of the periods have different numbers of elements?
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.
How many elements are in periods 6?
there are 32 elements in period 6.
How many elements are in periods 4?
There are 18 elements in period 4.
What are periods on the periodic table of elements?
The Periods are the horizontal rows on the periodic table.
How many elements occur in each of the first three periods or the periodic table?
There are 2 elements in the first period, 8, 8 elements in 2nd and 3rd periods respectively,
What are the differences between groups and periods?
Groups consist of elements listed in the same column. These elements share similar chemical properties, such as number of valence electrons. Periods are the rows of elements. These elements do not share chemical properties, as periods are organized by increasing atomic number (number of protons).
How many periods of elements are there?
The periodic table of Mendeleev has 18 groups and 7 periods.
