Concept explainers
(a)
Interpretation:
Whether in the given ion, the formal charge gives a fairly accurate picture of where the charge really is present is to be identified.
Concept introduction:
A charge that is assigned to an atom, on the assumption that all the electrons in the
The formal charge on an atom is calculated by the formula,
(b)
Interpretation:
Whether in the given ion, the formal charge gives a fairly accurate picture of where the charge really is present is to be identified.
Concept introduction:
A charge that is assigned to an atom, on the assumption that all the electrons in the chemical bonds are equally shared, is known as the formal charge. The sum of the formal charges on the independent atoms should equal the total charge present on the ion.
The formal charge on an atom is calculated by the formula,
(c)
Interpretation:
Whether in the given ion, the formal charge gives a fairly accurate picture of where the charge really is present is to be identified.
Concept introduction:
A charge that is assigned to an atom, on the assumption that all the electrons in the chemical bonds are equally shared, is known as the formal charge. The sum of the formal charges on the independent atoms should equal the total charge present on the ion.
The formal charge on an atom is calculated by the formula,
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Organic Chemistry
- Write the Lewis structures for CH2N2, including all resonance forms, and show formal charges.arrow_forwardThe thiocyanate ion , NCS- , has three possible Lewis structures.a. Draw these three structures and assign formal charges in each.b. Which Lewis structure is dominant?arrow_forwardThe cyanate ion, NCO-, has three possible Lewis structures.(a) Draw these three structures and assign formal charges ineach. (b) Which Lewis structure is dominant?arrow_forward
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- In which of the following compounds does hydrogen bear a partial negative charge: (a) CH4, (b) NH3, (c) H2O, (d) SiH4 or (e) H2S?arrow_forwardThe hypochlorite ion, ClO-, is the active ingredient inbleach. The perchlorate ion, ClO4-, is a main componentof rocket propellants. Draw Lewis structures for both ions. (a) What is the formal charge of Cl in the hypochlorite ion?(b) What is the formal charge of Cl in the perchlorate ion, assumingthe Cl—O bonds are all single bonds? (c) What is theoxidation number of Cl in the hypochlorite ion? (d) Whatis the oxidation number of Cl in the perchlorate ion, assumingthe Cl—O bonds are all single bonds? (e) In a redox reaction,which ion would you expect to be more easily reduced?arrow_forwardWhat is the formal charge on the anionic molecule (BrO3)-?arrow_forward
- Using the bond dissociation enthalpies in Table 8.8, estimate the enthalpy of combustion of gaseous methane, CH4, to give water vapor and carbon dioxide gas.arrow_forwardBased on the concept of formal charge, what is the central atom in (a) HCN (do not include H as a possibility)? b) NOCI (Cl is always a terminal atom)?arrow_forwardThree known isomers exist of N2CO, with the atoms in these sequences: NOCN; ONNC; and ONCN. Write resonance structures for each isomer and use formal charge to predict which isomer is the most stable.arrow_forward
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