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 period number.
The positive charge is the group number.
The negative charge is the group number.
The negative charge is the period number.
To recall the ionic charge of an alkali metal (Group 1), an alkaline earth metal (Group 2), or aluminum (Group 13), you can look at their respective group numbers on the periodic table.
- Alkali metals in Group 1 have a +1 ionic charge.
- Alkaline earth metals in Group 2 have a +2 ionic charge.
- Aluminum in Group 13 has a +3 ionic charge.
By knowing the group number, you can easily recall the ionic charge of these elements.