Molecular Formula: the notation that chemists use to show the number of elements

Question

Molecular Formula: the notation that chemists use to show the number of elements that make-up the compound. Atom Connectivity: just like it sounds, looking at which atoms are connected to which. For module IV-VII please build the molecules required for each, line-up the model with the structures drawn box, proceed to answer the critical thinking questions associated with the particular section as a group. Please DO NOT jump ahead AND USE THE MODELS. What is the molecular formula for Molecule A? Molecule B? Are the Molecular Formulas of Molecule A and B the same or different? (Circle one) Do Molecules A and B have the same or different atom connectivity? (Circle one) Are these two molecules identical? YES OR NO Guidelines: bond rotation is ok, but bond breaking is not. Molecules A and B as drawn are referred to as conformational isomers, give a precise definition of conformational isomers using all the information gathered above.

Explanation / Answer

1) molecular formula of A = C4H10 and B = C4H10
2) both A and B has the same molecular formula
3) both molecules are same connectivity of atoms.
4) both are different orientation along single bond rotation.
5) The given two structure are conformers.Conformational isomers are defined as the compounds having same molecular formula and same bond connectivity but they differ in their spatial orientation by C-C single bond rotation.

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