Question

Which group of atomic models is listed in historical order from the earliest to the most recent?
(1) hard-sphere model, wave-mechanical model, electron-shell model
(2) hard-sphere model, electron-shell model, wave-mechanical model
(3) electron-shell model, wave-mechanical model, hard-sphere model
(4) electron-shell model, hard-sphere model, wave-mechanical model

Answer 1

The group of atomic models that is listed in historical order from the earliest to the most recent hard-sphere model, electron-shell model, wave-mechanical model. The answer is number 2. The rest of the choices do not answer the question above.

Answer 2

Answer:2

Explanation:

HARD SPHERE MODEL

According to Dalton he viewed atoms as tiny, solid balls. His atomic theory had four statements which are:

1. Atoms are tiny, invisible particles.

2.Atoms of one element are all the same.

3.Atoms of different elements are different. 4.Compounds form by combining atoms.

ELECTRON SHELL MODEL

Bohr modified Rutherfords model of the atom by stating that electrons moves around the nucleus in orbit fixed sizes and energies.

WAVE MECHANICAL MODEL

Erwin states that electrons do not move in set path around the nucleus but in waves. He said it is impossible to know the exact point of an electron instead we have clouds of probability called the clouds.