Ion formation representative elements

An example of a CATION is

• Ca⁺²

• In⁺³

• Li⁺¹

• All of these are cations.

An example of an ANION is

• Cl^-1

• N^-3

• Se^-2

• These are all examples of anions.

Alkali metals (Group 1 metals) form

• +1 ions

• +2 ions

• -1 ions

• -2 ions

Alkaline Earth metals (Group 2) form

• +1 ions

• +2 ions

• +3 ions

• -6 ions

Tags

NGSS.HS-PS1-2

Group 13 metals and Boron form

• +3 ions

• -5 ions

• -3 ions

• +5 ions

Carbon ...

• is the only element that can form more than one ion charge.

• can only form +4 ions

• can only form -4 ions.

• can form +4 ions and -4 ions.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The halogens (Group 17)

• have 7 valence electrons.

• form -1 ions

• are the most reactive family of nonmetal elements.

• All of these are true.

Tags

NGSS.HS-PS1-1

The chalcogens (Group 16)

• form +2 ions

• form -2 ions

• form +6 ions

• form -6 ions

Tags

NGSS.HS-PS1-2

Noble gas elements (Group 18)

• never form ions

• are highly reactive

• form +8 charged ions

• form -8 charged ions

Nonmetals in Group 15

• form -3 charged ions

• form +5 charged ions

• form +3 charged ions

• form -5 charged ions