1.

The simple Bohr modle is not applicable to He4 atom because(a) He4 is an inert gas.(b) He4 has neutrons in the nucleus.(c) He4 has one more electron.(d) electrons are not subject to central forces.

Answer»

(c), (d)

(c) He4 has one more electron.

(d) electrons are not subject to central forces.



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