what is the wavelength of light that is emitted when an excited electron in the hydrogen atom falls from n

you need to have a picture of the atom that way we can answer it

diaria maybe go see a doctor about that

the population of unionid mussels in the hudson river decreased after zebra mussels were introduced. zebra mussels, a nonnative species, competed with the unionid mussels for food. the zebra mussels were able to outcompete the unionid mussels, allowing the zebra mussel population to increase dramatically over six years. the unionid mussel population decreased due to a lack of food.

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