Periodic Table Flashcards
Group 1
Alkali metals
Traits of alkali metals
Very reactive, as you go down reactivity increases
Group 2
Alkaline earth metals
Traits of alkaline earth metals
Reactivity isn’t as much as group one, as you move down reactivity increases
Group 7
Halogens
Traits of halogens
Very reactive, as you move down reactivity decreases
Group 8
Noble gases/ inert gases
Traits of noble gases
Non reactive
Atoms are made up of
Nucleus, protons(inside), neutrons(inside) electrons(outside)
Two forms atoms can exist in
Elemental, ionic
Ions
Has a charge, either positive or negative
Elements
Has a net charge of zero
Atomic number…..
Shows how many protons an element has
What is the electron trend in the atom
1:2
2:8
3:8
Atoms are stable when?
The valence shell is full