Question

what is atom? definably​

Answer 1

Answer:

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Explanation:

The smallest unit of an element, consisting of at least one proton and (for all elements except hydrogen) one or more neutrons in a dense central nucleus, surrounded by one or more shells of electrons. In electrically neutral atoms, the number of protons equals the number of electrons.

Answer 2

Answer:

Definition :-

• The smallest unit of an element, consisting of at least one proton and (for all elements except hydrogen) one or more neutrons in a dense central nucleus, surrounded by one or more shells of electrons. In electrically neutral atoms, the number of protons equals the number of electrons.

• An atom is a particle of matter that uniquely defines achemical element.

• 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.

Examples

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.

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