Question

How is the periodic table used to predict the properties of new elements?

Answer 1

First of all we should be aware of periodic table and about the elements. Periodic table is the arrangement of the chemical elements such as Hydrogen, Helium, Lithium etc., such that their chemical properties can be easily found out.

Complete answer:
The major advantages of periodic table are as follows:
i) It is very easy to remember the chemical properties of an element, in the periodic table, if its position is known.
ii) It has made the study of chemistry very easy and systematic.
iii) We can generally predict the type of compounds formed by an element, just by knowing its position in the periodic table.

Modern periodic table:
Mendeleev was the first one who published the modern periodic table in 1869. It is used to organize all the known elements in a periodic table. In this table, generally the elements are arranged in the order of increasing atomic number. Features of modern periodic table.
i) Elements are generally arranged, based on increasing atomic number.
ii) There are seven periods and eighteen groups.
iii) The horizontal rows are generally referred to as periods, while the vertical columns are generally known as groups.
iv) The elements are classified in periods generally based on the number of shells in their atoms.

The periodic table is useful in predicting the properties of a new element as it organizes the elements according to its atomic number.

Note: In modern periodic table, each element is represented by a unique chemical symbol and has a unique name. The other name of modern periodic table is Dmitri Mendeleev's periodic table.