Question

Based on the Lewis structure, all of the following statements are true of disodium fumarate. Explain whether or not the statement is also true based on the electron density plot. Clearly indicate which feature and which electron density plot best supports your reasoning. a) This molecule has both ionic and covalent bonds. b) There is an extra electron on two of the oxygen atoms (one on each side of the molecule) resulting in a -1 charge. c) There are two single C-C bonds and one double C-C in this molecule. d) There are two double C=O and two single C-O in this molecule.

Answer 1

1) Answer, about disodium fumerate.

a) This molecule is having both ionic and covalent bonds.

This is true,

Because, the bonds between O^{​​​​​​-}​​​​​ and Na⁺ are ionic and rest of the bonds present in the molecule are covalent.

b) There is an extra electron each of the two oxygens. This is true because, this negative charge comes after the loss of hydrogens.

C) the molecule is having two single C-C bonds and one C=C bond

d) true.

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