Odpowiedź:
1.
B
2.
Protony = 7
Neutrony =14-7=7
Suma protonów i neutronów = 7+7=14
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Odpowiedź:
1.
B
2.
Protony = 7
Neutrony =14-7=7
Suma protonów i neutronów = 7+7=14