To remedy the stability problem, Bohr<span> modified the </span>Rutherford model<span> by requiring that the electrons move in orbits of fixed size and energy. The energy of an electron depends on the size of the orbit and is lower for smaller orbits. Radiation can occur only when the electron jumps from one orbit to another.</span>
Answer:
E. through collective bargaining, labor unions had secured a national eight-hour day.
Explanation:
they caused General John Burgoyne to surrendur to the patriots. This victory showed that the Americans might win the war, causing france and spain to fight for the patriot side
I believe you are referring to Ferdinand Magellan first Portuguese explorer to circumnavigate the globe
