Physics, 26.10.2020 20:00 arambpri2636
Why do elements in the same group on the periodic table tend to have similar physical and chemical properties?
A
They have the same atomic mass.
B
They have the same number of protons.
C
They have the same number of valence electrons.
Answers: 1
Physics, 22.06.2019 07:30, bell777
30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve
Answers: 1
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