One of the emission spectral lines for be3+ has a wavelength of 466.4 nm for an electronic transmission that begins in the state with n = 6. what is the principal quantum number of the lower-energy state corresponding to this emission?

The electric potential v is constant everywhere within a certain region of space. which statement below is true? the choices are: the electric field is also constant (but not zero) within the region. a charged particle placed within the region will experience an electric force. the electric field is zero everywhere within the region. the electric field varies from place to place within the region.