what is atom? and structure of atom?
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what is atom? and structure of atom?
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Answer:
Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).
Answer:
An Atom is the smallest particle of an element that consists of electrons surrounding a nucleus that contains protons and neutrons.
The centre of an atom is called the nucleus, composed of protons and neutrons, surrounded by electrons which orbit in a series of energy levels which are called shells. Each electron shell is able to hold a particular number of electrons. The first shell outside the nucleus holds up two electrons, the second and third shell both hold a maximum of eight.