In the nineteenth century, what was known about atoms?

Question

Question 13 options:

A)

The exact structure of all atoms

B)

The half-life of all atoms

C)

The atom determines the chemical property of an element.

D)

The number of atoms that exist in the world is increasing.

Answer 1

In the nineteenth century, the most accurate statement from the options provided is:

C) The atom determines the chemical property of an element.

During the nineteenth century, scientists like John Dalton and Dmitri Mendeleev contributed significantly to the understanding of atomic theory and the periodic table, which established that the properties of elements are fundamentally related to their atomic structure and composition. However, the exact structure of atoms and concepts like half-lives were not fully understood until later developments in the 20th century.