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it is based on electrostatic force. when atoms bond by sharing electrons it is covalent bond. one pair of shared electron is single covalent bond. two pair of shared covalent bond is double covalent bond and three pair of shared covalent bond is triple covalent bonds
Answer of 13th question
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Answer of 13th question
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in water in oxygen Covent bond and in cao is ionic bond in water covelent bond methane also covelent bond ammonium ion co ordinate covalent bond
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