Define an atom and write down the symbols for any 10 elements with their respective names.
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Elements are pure substances. The atoms of each element are chemically distinct and different from those of any other element. Approximately 110 elements are now known. By 1980, 106 of these had been unequivocally characterized and accepted by the International Union of Pure and Applied Chemistry (IUPAC). Since that time, elements 107 and 109 have been identified among the products of a nuclear reaction. The search for new elements continues in many laboratories around the world; new elements may be announced at any time.
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Explanation:
An atom is the smallest unit of ordinary matter that forms a chemical element.
1)Hydrogen—H
2)Helium—He
3)Lithium—Li
4)Beryllium—Be
5)Boron—B
6)Carbon—C
7)Nitrogen N
8)Oxygen—O
9)Fluorine—F
10)Neon—Ne
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