A) potas
protony-19
elektrony-19
neutrony-20
B) bar
protony-56
elektrony-56
neutrony-81
C) cynk
protony-30
elektrony-30
neutrony-35
D) hel
protony-2
elektrony-2
neutrony-2
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A) potas
protony-19
elektrony-19
neutrony-20
B) bar
protony-56
elektrony-56
neutrony-81
C) cynk
protony-30
elektrony-30
neutrony-35
D) hel
protony-2
elektrony-2
neutrony-2