Respuesta :
Yes it is 11 atomic mass units (amu). Atomic mass (aka mass number) is asking "what is the weight of the nucleus?"
The nucleus contains all of the protons and neutrons, thus:
atomic mass = P + N = 5 + 6 = 11 amu
The nucleus contains all of the protons and neutrons, thus:
atomic mass = P + N = 5 + 6 = 11 amu