Why is maxwells electromagnetic theory not applicable to bohrs model?
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Answer:
Yes. Bohr's model is not really a theory at all -- it's just the observation that you get the right atomic spectra if you simply assume the particle may only have angular momentum L=nℏ and that the n=0 state is stable. No reason is given for this, so of course it contradicts Maxwell's equations.
Bohr was simply trying to find the simplest assumptions that would fit the data. The real explanation is quantum mechanics, which of course is not compatible with classical electromagnetism. Roughly speaking, in quantum mechanics the configuration of the electron in a given orbital is a standing wave. Unlike classical particles, standing waves have a lowest possible frequency, which musicians know as the fundamental. When the electron is in this state, it can't lose any more energy, so it doesn't radiate.