Número atómico

The video tutorial explains that atoms define chemical elements. Naturally occurring elements have atomic numbers between 1 and 92. Since 1940, elements with higher atomic numbers have been artificially created, leading to the observation of 118 elements in total.

What defines the chemical element of an atom?

What is the range of atomic numbers for elements that occur in significant quantities in nature?

What is the significance of atomic numbers between 1 and 92?

Since when have atoms with higher atomic numbers been artificially created?

How many elements have been observed so far?