Question

The arrangement of elements in a group of
three is called ...​

Answer 1

We can understand from the above discussion that the arrangement of elements in a group of three is known as Dobereiner's triads and this is the required answer. Note: ... Mendeleev's periodic table has 63 elements. They were placed in a tabular form in increasing order of their relative atomic masses

what is arrangement of elements called?

The periodic table of elements arranges all of the known chemical elements in an informative array. Elements are arranged from left to right and top to bottom in order of increasing atomic number. Order generally coincides with increasing atomic mass. The rows are called periods.

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