edeliz3886
20.12.2020 •
Physics
Atoms of two different elements must have different
A. Electrical charges
B. Number of neutrons
C. Atomic numbers
D. Energy levels
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Ответ:
Explanation:
C. Atomic numbers
Ответ:
atomic numbers
Explanation:
In order for two atoms to be different, they have to have a different number of protons. Protons are represented by the atomic number. Thus, atoms of two DIFFERENT elements must have different atomic numbers.
I took the test and got 100%
Hope this helps!
Ответ:
100 m
Explanation:
distance = speed x time
20×5 =100 m