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Elements in the same group have similar properties because they
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A. need the same number of electrons to fill their valence shells
B. have the same number of valence electrons
C. have the same number of electrons
D. have the same number of electron shells
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Physics, 21.06.2019 22:00
What is the fate of the electrons that interact with a specimen in an electron microscope?
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Physics, 22.06.2019 04:30
Light from the sun reaches the earth in 8.3 minutes. the velocity is 3.00 x 10^8 m/s. how far is earth from the sun? i know how to get to d = (3 x 10^8 m/s)(498 sec). i just don't know how to get from there to the answer being 1.5 x 10^11 m.
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Physics, 22.06.2019 12:30
Apositive charge moves in the direction of an electric field. which of the following statements are true? check all that apply. check all that apply. 1.the potential energy associated with the charge decreases. 2. the electric field does positive work on the charge. 3. the electric field does negative work on the charge. 4. the potential energy associated with the charge increases. 5. the electric field does not do any work on the charge. 6. the amount of work done on the charge cannot be determined without additional information.
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Physics, 22.06.2019 23:50
Which property is expressed in distance units? o a. period o b. wavelength o c. speed o d. frequency
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Elements in the same group have similar properties because they
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Mathematics, 06.05.2021 21:50
Mathematics, 06.05.2021 22:00
Mathematics, 06.05.2021 22:00
Mathematics, 06.05.2021 22:00
Mathematics, 06.05.2021 22:00