Which of the following is true of groups on the periodic table? a. groups are horizontal and do not have the same properties. b. groups are vertical and do not have the same properties. c. groups are horizontal and have the same properties d. groups are vertical and have the same properties.

Pinene is an unsaturated hydrocarbon found in pine resin. if pinene has m+ = 136 and contains 1 double bond(s) and 2 ring(s); what is its molecular formula? enter the formula in the form ch first, then all other atoms in alphabetical order; do not use subscripts. the formula is case-sensitive