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Card 6

Front

Beth yw Rhis Mas?

Back

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Card 7

Front

Mae rhif y protonau bob amser yn hafal i rhif yr electronau, Felly nid oes gan atom wefr (mae'n niwtral) gan bod:

Back

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Card 8

Front

Sut i ddarganfod nifer y Protonau?

Back

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Card 9

Front

Sut i ddarganfod nifer y Electronau?

Back

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Card 10

Front

Sut i ddarganfod nifer y Niwtronau?

Back

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Card 11

Front

Pam ydy'r ddwy elfen yn yr un grwp yn y Tabl Cyfnodol?

Back

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Card 12

Front

Faint o electronau mae'r plisgyn 1af yn dal?

Back

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Card 13

Front

Faint o electronau mae'r 2il plisgyn yn dal?

Back

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Card 14

Front

Faint o electronau mae'r 3yd plisgyn yn dal?

Back

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Card 15

Front

Pwy lluniodd y tabl cyfnodol?

Back

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