jasminen3835232
18.03.2021 •
Chemistry
When rapidly moving electrons collide with heavy metal in the discharge tube, it produce
A: x-xay
B: gamma rays
C: cathode rays
D: positive rays
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Ответ:
1s², 2s², 2p⁶, 3s², 3p⁶, 4s²
answer d
hope this !