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TGAU

Y tabl cyfnodolTest questions

Siart yw'r tabl cyfnodol sy'n dangos yr elfennau i gyd wedi'u trefnu yn ôl eu rhif atomig.

Part of CemegAdeiledd atomig a'r tabl cyfnodol

In this guide

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Test

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Yr atom
Metelau alcalïaidd Grŵp 1
Halogenau Grŵp 7
Grŵp 0 a phrofi ïonau

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