State two characteristics shared by elements of the same group in the periodic table

The boiling point of liquids is very high what does it indicate

Consider this initial-rate data at a certain temperature for the reaction described by

Consider the following reaction at equilibrium. 2co2 (g) 2co (g) + o2 (g) h° = -514 kj le châtelier's principle predicts that the equilibrium partial pressure of co (g) can be maximized by carrying out the reaction a. at high temperature and high pressure b. at high temperature and low pressure c. at low temperature and low pressure d. at low temperature and high pressure e. in the presence of solid carbon