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Uned 1.2
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Cards (10)
Rhif atomig?
Nifer y
protonau
yn
niwclews
atom
Rhif mas?
Nifer y
protonau
+
niwtronau
yn
niwclews
atom
Isotopau?
Atomau gyda'r un nifer o
brotonau
ond nifer gwahanol o
niwtronau
Ion?
Gronyn
lle nad yw nifer yr
electronau
yn hafal i nifer y
protonau
Gronynnau beta?
Electronau'n symud yn gyflym
, felly gwefr
negatif
Pelydriad
gama?
Pelydriad
electromagnetig
egni uchel, gwefr dim
Beth yw gronyn alffa?
Niwclews Heliwm
Ymddygiad
gronynnau
mewn meysydd trydanol?
Ymddygiad gronyn alffa mewn meysydd trydanol?
Atynnu at y plat negatif
Ymddygiad
gronyn beta
mewn
meysydd trydanol
?
Atynnu at y plat positif
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