About this calculator
The atom calculator lets you calculate the atomic number and the mass number based on the number of atom components - protons, neutrons, and electrons.
What is an atom?
The smallest unit of ordinary matter that does not lose the chemical identity of an element is called an atom. It is a minute, and extremely organized system consisting of a compact nucleus and enclosed by a cloud of electrons. It takes atoms combining, rearranging and interacting to create everything you see: the air you breathe, the water you drink, the metals in your phone and the complex molecules within your body.
What are atoms made of?
There are three particles that make the atoms, neutrons, protons and electrons. The nucleus of the atom is made up of protons and neutrons and the electrons are circular around the nucleus. Protons are positively charged and the electrons are negatively charged. In the ordinary case, there are as many electrons as there are protons, and hence an atom is electrically neutral.
Who discovered atom?
John Dalton discovered atoms in 1808. This is an English chemist and physicist who came up with the atomic theory which asserts that all atoms of one element are exactly the same in size and mass. He concluded that the elements consisted of smaller atoms and the unit of mass was the mass of one hydrogen atom.
In which places do chemical reactions take place in atoms?
Reactions between the electrons farthest away from the nucleus generally occur. These reactions do not normally result in the destruction of the nucleus of an atom. The property of a chemical reaction is that it can reverse the location of atoms, which might lead, say, to the creation of other chemical compounds.