What is the wavelength of spectral line resulted from the electron transition from n=3 to n=2 in a hydrogen atom.

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Hydrogen is the most abundant element on the periodic table..hope it .

If a hydrogen atom is neutral, it must also have  one electron. an oxygen atom (o) has an atomic number of eight (8). this means a neutral oxygen atom has eight protons and eight electrons. the element actium (ac) has an atomic number of 89, so it has 89 protons and 89 electrons in a neutral atom

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