WILL GIVE BRAINLIEST

atomic number

H is on the very top left

they are organized into columns with somewhat similar behaviors ie the alkali metals (the first column or period) are all very reactive (except H as it only has one electron in one shell, it is sometimes put into its own separate category

Explanation:

pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

explanation: