Elements in the first column of the periodic table are known as alkali metals. what do these elements have in common when ionized?

The alkali metals takes column 1 A of the periodic table.some of them are hydrogen, potassium,lithium etc. The elements gets into their ionic +1 form because they easily lose their one electron in the outermost shell.This one electron is the outermost layer of electrons is responsible for the various properties of alkali metals.

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.

answerspecific gravity;