Assign the correct terms to the conformation of butane (which are in no particular order) Conformation 1 anticlinal: Conformation 2 gauche or synclinal: Conformation 3 syn-periplanar or eclipsed; Conformation 4 anti-periplanar or trans co-planar. Conformation 1 gauche or synclinal; Conformation 2 anticlinal; Conformation 3 syn-periplanar or eclipsed; Conformation 4 anti-periplanar or trons co-planar. Conformation 1 anticlinal; Conformation 2 gauche or synclinal; Conformation 3 anti-periplanar or trans co-planar; Conformation 4: syn-periplanar or eclipsed Conformation 1 anticlinal; Conformation 2 anti-periplanar or trons co-planar; Conformation 3 syn-periplanar or eclipsed; Conformation 4: gauche or synclinal