6092 Covalent Bonding and chemical formulae of common molecules

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Molecule of element

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electrically neutral particle made up of two or more atoms of the same kind which are chemically combined together though the sharing of electrons.

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Molecule of compound

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electrically neutral particle made up of two or more atoms of different elements which are chemically combined together though the sharing of electrons. 

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covalent substances

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Any element (non-metallic elements) and compound (mostly made up of non-metallic elements) which are made up of molecules

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covalent bond

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Covalent bond is the strong electrostatic forces of attraction between the positively charged protons in the nuclei of the two atoms and the negatively charged electrons which are shared between the two atoms. 

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Chemical formulae of hydrogen 

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H₂

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Chemical formulae of oxygen 

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O₂

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Chemical formulae of nitrogen

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N₂

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Chemical formulae of fluorine

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F₂

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Chemical formulae of ammonia

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NH₃

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Chemical formulae of hydrogen peroxide

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H₂O₂