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Member for
3 years 5 monthsAge: 12-13
Level: 8
Language: Czech
(cs)
ID: 562454
03/12/2020
Country code: CZ
Country: Czechia
Main content: Atom (1936119)
Určení počtu protonů, elektronů, neutronů v atomu.
Other contents: stavba atomu, protony, elektrony, neutrony
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