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How many nonbonding pairs of electrons are there around the central sulfur atom in H2S? Given : S atomic number 16 *
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Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.
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How many nonbonding pairs of electrons are there around the central sulfur atom in H2S? Given : S at...
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