When a calcium atom loses its valence electrona the ion formed has an electron configuration that is the same as an atom of. (1) cl (2) ar (3) k (4) sc

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Adeuteron, 21h, is the nucleus of a hydrogen isotope and consists of one proton and one neutron. the plasma of deuterons in a nuclear fusion reactor must be heated to about 3.02×108 k . what is the rms speed of the deuterons? express your answer using two significant figures.