Question

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why are elements of periodic table arranged in rows and columns..​

Answer 1

$\huge\mathfrak\red{Answer}$

⭐ 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 .

Answer 2

element are arranged in rows and columns according to their increasing atomic no.