Which of the following statements regarding electromagnetic transitions from exc

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Which of the following statements regarding electromagnetic transitions from excited states are true? A photon may have angular momentum J = 0, 1, 2. 3... but not half-integer. Nuclei may couple either to the electric or magnetic components of a photon and we call these electric" or magnetic" transitions accordingly; the two are distinguishable from their different parities. A J = 2 transition is a dipole" transition If the initial and final nuclear states exhibit the same parity then the parity of a photon is negative Photons of high total angular momentum are emitted from states with very dissimilar J. and correspond to relatively long-lived states. Knowing the multipole type of the radiation helps us learn the spins and parities of the associated nuclear states. If the initial and final nuclear states exhibit the same parity then the parity of a photon is positive

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