How is the ionization energy trend in the group

The trend in principal quantum numbers accounts for the decrease in ionization energy down a group. The trend in effective nuclear charge accounts for the increase in ionization energy across a period.

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:

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