How do you use the periodic table to recall the ionic charge of an alkali metal, an alkaline earth metal, or aluminum? The positive charge is the group number.

The negative charge is the group number.

The positive charge is the period number.

The negative charge is the period number.

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples