groups and columns
valence electrons
reactivity
elements
100
group 1 alkali metals
What group has the most reactive metals
100
3
how many valence electrons does boron have ?
100
highly reactive
what is the reactivity of an element with 7 valence electrons?
200
group 18 noble gases
What group is made up of non reactive non metals ?
200
18
what group is stable?
200
highly reactive
What is the reactivity of an alkali metal ?
300
group 17 halogens
What group has the most reactive metals?
300
7
how many valence electrons does group 17 have
300
non reactive
What is the reactivity of the noble gases
400
column 1
What column is hydrogen in?
400
1
how many valence electrons does helium have?
400
non reactive
What is the reactivity of an element with 8 valence electrons?
500
2
how many valence electrons do alkaline earth metals have?
500
not reactive
What is the reactivity of neon ?
500
Chromium
What is located in group 6 period 8
M
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