Question

what is atom and molecules?

what is the size of atom..?

answer in 50- 100 words
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Answer 1

Answer:

Atoms are defined as “the basic building blocks of matter”. It is the smallest constituent unit of matter that posses the properties of the chemical element. ...Molecules consist of one or more atomsbound together by covalent (chemical) bonds.

Under most definitions the radii of isolated neutral atoms range between 30 and 300 pm (trillionths of a meter), or between 0.3 and 3 ångströms. Therefore, the radius of an atom is more than 10,000 times the radius of its nucleus (1–10 fm), and less than 1/1000 of the wavelength of visible light (400–700 nm).

Explanation:

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Answer 2

Answer:

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❥ 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.

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❥ Molecules consist of one or more atoms bound together by covalent (chemical) bonds.