that may take any positive value starting from 1, and which determines the (quantized) angular momentum magnitude 
of the electron in the 
Bohr orbit around the nucleus (see Bohr's quantization). [P8.2]
in: the Bohr model of the hydrogen atom
is: an integer that may take any positive value starting from 1, and which determines the (quantized) angular momentum magnitude of the electron in the Bohr orbit around the nucleus (see Bohr's quantization). [P8.2]
also determines: the radius of the Bohr orbit and the associated energy level:
for 
[P8.2]
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