What surrounds the nucleus of an atom?

Each possible electron orbit in Bohr's model has a ____________ energy.

The fixed energies an electron can have are called _______.

To move from one energy level to another, an electron must gain or lose just the right amount of _________.

A ______ of energy is the amount of energy required to move an electron from one energy level to another energy level.

The higher energy levels in Bohr's model are ________.

The Bohr's model provided results in agreement with experiments using the _______ atom.

Electrons _______ exist between the energy levels.

The Bohr’s model in 1913, is not completely ____.

The innermost orbit has the ____ an electron can have.

The innermost orbit has ____ electrons.

The second orbit has ____ electrons.