How can you find the ionic charges of elements by looking at the periodic table?

Answer 1

Left side of Periodic table have positive charges.
Right side of Periodic table have negative charges

During ionic bonding, all metals up to the stepped line lose one or more electrons, giving them a positive charge.

During ionic bonding, every non-metal from the stepped line gains one or more electrons, giving them all a negative charge.

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Answer 2

Natalie Anton

Elements in groups 1, 2, and 13 tend to lose electrons to achieve a stable noble gas configuration, resulting in positive charges equal to their group number; elements in groups 15, 16, and 17 tend to gain electrons to achieve a stable noble gas configuration, resulting in negative charges equal to the difference between 8 and their group number. These positions on the periodic table can be used to determine the ionic charges of individual elements.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.