define atom in chemistry with examples
Answers
Answer:
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Explanation:
An atom is the smallest unit of ordinary matter that forms a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are extremely small, typically around 100 picometers across.
Here are some examples of atoms:
Neon (Ne)
Hydrogen (H)
Argon (Ar)
Iron (Fe)
Calcium (Ca)
Deuterium, an isotope of hydrogen that has one proton and one neutron.
Plutonium (Pu)
F-, a fluorine anion.
Answer:
An atom is the smallest unit of ordinary matter that forms a chemical element. Every solid, liquid, gas, and plasma is composed of neutral or ionized atoms. Atoms are extremely small, typically around 100 picometers across.
Components: Electrons and a compact nucleus of protons and neutrons
Electric charge: zero (neutral), or ion charge
Mass range: 1.67×10−27 to 4.52×10−25 kg
Diameter range: 62 pm (He) to 520 pm (Cs) (data page)