Question

Define Periodic Table and how many elements are there in a periodic table known to

us. ​

Answer 1

The periodic table is a tabular array of the chemical elements organized by atomic number, from the element with the lowest atomic number, hydrogen, to the element with the highest atomic number, oganesson. The atomic number of an element is the number of protons in the nucleus of an atom of that element.

Since 2016, the periodic table has 118 confirmed elements, from element 1 (hydrogen) to 118 (oganesson).

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Answer 2

Answer:

Periodic table - The table of the chemical elements arranged in the order of atomic no.s which has 18 groups and 7 periods in the periodic table. Their are 4 blocks in the the periodic table (s , p , d , f)

Now we know 118 elements in the periodic table.