Question

Name the scientist who first formulated the atomic structure.

Answer 1

Hint: The atomic structure consists of Atomic particles. Atoms consist of three basic particles, protons, electrons and neutrons. The nucleus (center) of an atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and they contain the electrons.

Complete step by step answer:
-The atomic structure of an element refers to the constitution of its nucleus and the arrangement of the electrons around it. Primarily, the atomic structure of matter is made up of protons, electrons and neutrons.
-But, the atoms of different elements have different atomic structures because they contain different numbers of protons and electrons.
-The first scientific theory of atomic structure was proposed by John Dalton in1800s. The atomic structure is as shown-

John Dalton suggested that all matter is made up of atoms, which were invisible and indestructible. He also stated that all the atoms of an element were exactly the same, but the atoms of different elements differ in size and mass.

Note:
There were few postulates of this theory:
-Every matter is made up of atoms.
-Atoms are invisible.
-Specific elements have only one type of atom in them.
-Each atom has its own constant mass that varies from element to element.
-Atoms undergo rearrangement during a chemical reaction.