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14-01-2021
Mathematics

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Z
8
10
y=
51
O
39
O 37

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Аноним Аноним

14-01-2021

Answer:

erylium Be Z=4, A=10 ... Oxygen O Z=8, A=16 ... Vanadium Va Z=23, A=51 Rubidium Rb Z=37, A=85.5. Strontium Sr Z=38, A=88. Yttrium Y Z=39, A=89

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