Atom is the smallest particle, characterizing a chemical element, namely the smallest particle of a substance, which by ordinary chemical processes cannot be fragmented into other simpler particles.
The atom consists of a cloud of electrons which are surrounding a dense atomic nucleus. The nucleus contains electrical charges,positively charged, called protons, and neutral electrical charges,called neutrons, being surrounded by the negatively charged electronic cloud.
When the number of electrons and protons is equal, then the atom is electrically neutral, if this thing is not happening, then the atom becomes an ion that can have positive or negative charge. Atom is classified by the number of protons and neutrons: the number of protons determines the atomic number (Z) and the number of neutrons determines the isotopes of that element.
No comments:
Post a Comment