Physics
Physics, 16.10.2021 05:00, dabizgaming7575

Symbol-atomic number-mass number- Ca. 20. (blank)

#neutrons-#protons-#electrons-
(blank) 20. 18

atom or ion (include charge)
+2 Cation

-isotope or atom
isotope

answer
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Symbol-atomic number-mass number- Ca. 20. (blank)

#neutrons-#protons-#electrons-
(...

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