(I) \[_{20}C{{a}^{49}}\] |
(II) \[_{80}H{{g}^{195}}\] |
(III) \[_{5}{{B}^{8}}\] |
(IV) \[_{67}H{{o}^{150}}\] |
(V) \[_{13}A{{l}^{30}}\] |
(VI) \[_{36}K{{r}^{39}}\] |
Answer:
3
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