Question

1. (a) Explain modern periodic law​

Answer 1

Explanation:

the law that the properties of the elements are periodic functions of their atomic numbers. Also called Mendeleev's law. (originally) the statement that the chemical and physical properties of the elements recur periodically when the elements are arranged in the order of their atomic weights.

Answer 2

Mendeleev, who first published his periodic table in 1869 is usually credited with the origin of the modern periodic table.

The modern periodic table is used to organize all the known elements. Elements are arranged in the table by increasing atomic number. In the modern periodic table, each element is represented by its chemical symbol. ... Columns of the periodic table are called groups. Elements in the same group have similar properties

The other name of modern periodic table is Dmitri Mendeleev's periodic table..