Refer to peridoic table. niobium (nb) belongs to which group and period? a. group 5; period 5b. group 14; period 5c. group 1; period 4d. group 5; period 3

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid