Electrons
The Alkali metals have this many electrons in their outer shells
1
This family includes the most reactive metals on the periodic table
The Alkali metals
This energy block includes the Alkali and Alkaline earth metal families.
S block
The scientist who left gaps in the periodic table
Mendeleev
This group appears in nature as monatomic.
Noble Gases
Neon has a full shell of electrons and is part of this family
The Noble Gases
An unknown element is found in a compound that will not react with other elements. What family is this element a part of?
The Noble gases
This block includes the transition metals
D-block
The scientist who arranged the periodic table by valency
Newlands
This family appears silvery and is soft (reacts violently).
Alkali metals
The electrons in these groups shells varies
Transition metals
This family is includes the most reactive gases on the periodic table.
Halogens
This block includes the lanthanides a and actinides.
The F block
He arranged the periodic table by number
Moseley
This family forms ions with +2 charges
Alkaline Earth Metals
These elements have 7 electrons in their outer shells
Halogens
This family is reactive, but not as reactive as Alkali metals
Alkaline Earth Metals
This block includes both the halogens and noble gases
He ordered the elements around a cylinder
de Chancourtois
This family has varying oxidation numbers
Transition metals