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- The nucleus of an atom contains:A. electrons and protons only.B. protons only.C. electrons, protons, and neutrons.D. protons and neutrons only.Reset SelectionMark for Review What’s This?I need answer for Q.N- 23I'm not sure if this is correct answer. I'm struggle with the draw an energy level digram for a calcium atom.
- Dumb question, just starting to learn about mass spectometry. I know we have to memorize the common radical fragments, M-15, M-29, etc, but lloking at the example, those numbers dont crrespond to the absorbance or the m/z, so for example, M-29. The absorbance for M-29 is at 100 , while the m/z is at 43. How is it designated to be M-29?Calculate the frequency of visible light having a wave length of 486 nm. Answer in s-1 to 3 sig figsWhat is the frequency of light (s-1) that has a wavelength of 1.23 × 10-6 cm? Where: C = λνλν and C = 3 x 108 m/s Group of answer choices 2.44 x 1016 s-1 4.10 x 10-17 s-1 3.69 s-1 1.04 x 10-13 s-1 9.62 x 1012 s-1