15 Which compound has non-polar molecules? E-1,2 -dichlorobut-2-ene E-2,3 dichlorobut-2-ene Z-2,3 -dichlorobut-2-ene Z-1,4 -dichlorobut-2-ene ci

Timer starts now.Explanation:We are looking to select which compound among the provided options is a non-polar molecule. In essential terms, a non-polar molecule features balanced sharing of its electrons, resulting in an even charge distribution across its structure. The molecular structure also plays an essential part in vetting a molecule's polarity—with symmetric structures striving towards non-polarity—grandly due to its ability to cancel out dipole moments within the molecule. Now let's review these potential compounds:
1. E-1,2-dichlorobut-2-ene: The 'E' ('Entgegen') is a prefix used by IUPAC nomenclature to denote trans configuration, where substitutents reside across a double bond in the compound. However, due to the dichlorobut-2-ene cis-trans resonance, the 1,2-dichloro element results in a non-symmetric molecular structure, resulting in a polar molecule. Thus, this substance isn't the solution.2. E-2,3-dichlorobut-2-ene: this option follows the previous one. While the double bond sticks in the central compound structure, the chloride atoms sit at the 2,3-positioned trans rearrangement. Nevertheless, resonance takes an effect and can lead to stray from symmetry and lead to positive negative charge segregation in the molecule. Therefore, our conclusion remains similar; this compound is not non-polar. Thus, this molecule isn't the solution either.3. Z-2,3-dichlorobut-2-ene: 'Z' ('Zusammen')connotes that the molecule's chlorides exist in an identical moiety or the c's configuration with regards to the given double connection in the context of this provided nomenclature. Nonetheless, the overall structure is not symmetrical due to the 2,3 positions of the chlorine atoms through resonance resulting in stray from symmetry similar to its E counterpart, meaning an uneven distribution of electron density can occur establishing this molecule as also polar.4. Z-1,4-dichlorobut-2-ene: With 'Z' ('Zusammen') once again depicting cis configuration for the compound’s substituent groups reciprocous to the given double connection, the phrased '1,4-dichloro' validates the existence of chlorine constituents positioned at the possibly furthermost spots in the structure. Consequently, this creates a symmetric skeleton. Rectifying that, the symmetry prompts equal force dispersion, developing no nett dipole inference—indicative of a molecule's non-polarity properties.Therefore, by eliminating the first three options, and following analysed reasoning, Z-1,4-dichlorobut-2-ene qualifies as the impeccable candidate for the tag, "non-polar molecule."【Answer】: Z-1,4-dichlorobut-2-ene