Each element has a unique emission spectrum. Atoms emit energy only at specific wavelengths.

Describe how the Bohr model explains both of these observations.

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since electrons are negative the answer is neagtaive

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8