2) Who are the Cations and Anions?

Know which elements gain or lose electrons

How can you tell what kind of ion many elements will form?

by looking at their position on the periodic table

By looking at the position of an element on the periodic table, what can you tell?

what kind of ion they will form

What is an octet?

a full shell of eight valence electrons

What is full shell of eight valence electrons called?

an octet

All elements are most stable with an octet, except who?

hydrogen and helium

Except hydrogen and helium, all elements are most stable with what?

an octet

What are examples of how atoms tend to take the shortest path to complete an octet?

ditching a few electrons at a lower energy level, or grabbing extra electrons at their current energy level

Ditching a few electrons at a lower energy level, or grabbing extra electrons at their current energy level are examples of what?

how atoms tend to take the shortest path to complete an octet

What is a partner atom usually required for?

atoms becoming cations or anions

What is usually required for atoms becoming cations or anions?

a partner atom

Group 1A (alkali metals) elements _

lose one electron

What group of elements lose one electron

1A (alkali metals)

What group of elements lose two electrons?

Group 2A (alkaline earth metals)

Group 2A (alkaline earth metals) _

lose two electrons

Group VIIA (halogen) elements _

gain one electron

What group of elements gain one electron?

Group VIIA (halogen)

What group of elements tend to gain two electrons?

Group VIA

Group VIA tend to _

gain two electrons

What group of elements tend to gain three electrons?

Group VA

Group VA tend to _

gain three electrons