کارت شما خالی است
Who discovered that electrons are negatively charged?
Why is the atomic nucleus considered to be positively charged and the electron cloud, negatively charged?
Grades 9 – 12
نویسنده: Csányi Sándor
بازبین: Kovács Attila
Graphic designer: Fasola Martin
Developer: Baricza Réka
موزالينک
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