What is atom?

An atom is the smallest unit of normal matter that makes up a chemical group. Atoms that are neutral or ionized make up every solid items, liquid items, gas and the plasma. Atoms are extremely minuscule, with a diameter of roughly 100 picometers. It is impossible to predict the behavior of quantum effects using traditional physics because of their complexity. Every atom is made up of a nucleus and one or even more electrons attached to it. One or more protons and a few of neutrons make up the nucleus. Only one form of hydrogen, which is the most common, is absent of neutrons. The nucleus hold more than 99.94% mass of an atom.

Protons have a positive electrical charge, whereas electrons have a negative electrical charge and neutrons have none. If the number of protons and electrons in an atom is equal, it is electrically neutral. Ions are atoms that have a negative or positive total charge due to the presence of more or fewer electrons than protons. The electromagnetic force pull the electrons of an atom to its protons in the atomic nucleus. The nuclear force pull the protons and neutrons in the nucleus to each other. This force is form a long than the electromagnetism that repels positively charged protons from one another. The electromagnetic force resisting the nuclear force becomes stronger under certain circumstances. In this example, the particles have disintegrated, leaving many bits behind, this is the form of a nuclear division.

The number of protons in the nucleus of an atom determines the chemical element to which it relates. For example, the Copper is any atom with 29 protons. The number of neutrons in a given element determines its isotope. Chemical bonds allow atoms to join with one or more other atoms to form different chemicals such as molecules or crystals. The majority of physical changes in nature are caused by atoms’ ability to link and disassociate. Chemistry is a branch of science that investigates all of these changes.

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