Elfen Grŵp 3: Gwahaniaeth rhwng fersiynau

! [[Periodic table period|Cyfnod]] || [[Periodic table group|Grŵp]] '''3'''

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| {{element cell|21|Scandiwm|Sc| |Solid|Transition metals|Primordial}}

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| {{element cell|39|Ytriwm|Y| |Solid|Transition metals|Primordial}}

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| {{element cell|57|Lanthanwm|La| |Solid|Lanthanides|Primordial}}

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| {{element cell|89|Actiniwm|Ac| |Solid|Actinides|Natural radio}}