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Which radioisotope is used to date fossils? a. oxygen-16 b. carbon-14 c. uranium-238 d. carbon-12
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Which of the following is in the lanthanide family? a) uranium b) promethium c) silver d) gold
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Use the de broglie's wave equation to find the wavelength of an electron moving at 7.3 × 106 m/s. show your work. note: h = plank's constant (6.62607 x 10-34 j s)
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How many more neutrons does thorium-230 have than protons? how many electrons does thorium-230 have...
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