why does hydrogen have a line spectrum and other elements have a. continuos spectrum?

When robidium ions are heated to a high temp, two lines are observed in its line spectrum at wavelength a. 7.9*10^-7 and b 4.2*10^-7 m. What are the frequences of 2 lines. What color do we see when we heat a robdium compound

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How does the term induction explain the relationship between an electric field and a magnetic field? The term induction is not a term that can be used to explain the relationship. Induction is the idea that when a magnetic field changes, it changes the electric field so it no longer produces electricity. Induction is the idea that when an electric field changes, it blocks a magnetic field. Induction can be used to explain how changing either the electric or magnetic field will affect the other.

27. Which of the following ground-state electron configurations corresponds to the atom that has the most negative value of the electron affinity? A) 1s²25²2p®3s?3p2 B) 1s²2s22p°3s?3p®3d54s² C) 1s2252p6 D) 1s22s?2p5 E) 1s²25²2p63s²3p5

I need help explaining why they are forbidden on the right column

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Which of the following represent the proper long hand form electron configuration of ruthenium, Ru, using the building-up principle?   answer choices:  a. 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 5s2 4d6 b. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d6 c. [Kr] 4d6 5s2 d. 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 4d6 5s2

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