[" s3.Which branched chain isomer of the "],[" tane? "53." Which branched chain isomer mass "72" u "],[" gives only one isomer of mono substituted "],[" alkyl halide? "],[" (a) Tertiary buty chloride "],[" (b) Neopentane "],[" (c) Isopentane "],[" (c) Isonexane "],[" (d) Neohexane "]