In the periodic table, the period number indicates
a the number of not showing on the lewis dot diagram’s for elements in that period
b the number of the outer most energy level for elements in that period
c the number of balance electrons four elements in that period
d the reactivity levels for elements in that period

option B. The number of the outer most energy level for elements in that period

Explanation:

the electrical  conductivity  of asolution  of an electrolyte is measured by determining the resistance of thesolution  between two flat or cylindrical electrodes separated by a fixed distance.

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.