Answer following
What is the formal charge of nitrogen in the following structure? +2 +1 0 -1 -2 Which of these substances contain both covalent and ionic bonds? NH_4Cl H_2O_2 CH_4 HCN H_2S Circle the compound below that is not a constitutional isomer of the others? 4 cis-trans: isomerism is possible only in the case of: CH_2 = CBr_2 CH_2 = CHBr BrCH = CHBr Br_2C = CHBr Br_2C = CBr_2

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