Atomic Theory, Atoms, Bohr's Model, Isotopes, Metal and Nonmetals

Neils Bohr's atomic theory is similar to the concept of the

• solar system

• circles with dots

• spinning wheel

• None of the above

Bohr's model answered the problem in Rutherford's model that

• electrons are not spinning at all

• electrons are spaced

• electrons are free to move around the nucleus

• spinning electrons will eventually lose energy and collides to the nucleus

When an electron absorbs enough energy, it jumps up to a higher level. This is called

• absorption state

• excitation state

• emission state

• relaxation state

Soon after the electron absorbs energy, this energy is released in a form of light or photon, this is the

• absorption state

• excitation state

• emission state

• relaxation state

Tags

NGSS.HS-PS1-2

NGSS.HS-PS4-3

According to Bohr, the energy absorbed by an electron upon excitation comes in a fixed amount called

• exact energy

• fixed energy

• quantized energy

• None of the above

Any energy absorbed by an electron causes it to have to higher energy level

• True

• False

Tags

NGSS.HS-PS1-2

Bohr's idea about the atom is pretty good, however it has limitation. What is this limitation?

• It lacks substantial evidence explaining the spectral lines of the Hydrogen atom.

• His model is too simple.

• His model can no longer explain the behavior of electron based on its spectral lines of atoms with more than one electron.

• None of the above

The greatest contribution of Neils Bohr in the study of atom is the

• energy level

• orbital

• spectral lines

• absorption and emission of light

Tags

NGSS.HS-PS1-1

Because of the model's limitation, Bohr's model is rejected.

• True

• False