Answer:
answer - c
answer - a
Explanation:
<h2>I hope answer correct</h2><h2><em><u>pl</u></em><em><u>ease</u></em><em><u> like</u></em><em><u> me</u></em></h2>
The fact that there are definite energy levels in the radiation spectra is known since light wavelength has been linked with the energy quantum (Einstein 1905 - Δ=ℎ.). These energy differences explain the reason why the spectrum of atoms is discontinuous (formed by spectral lines).
Bohr had the idea to link it to a change in the orbit radius of the electron around the nucleus (The idea that H atom could be formed by the association of one proton and one electron had been suggested a couple of years before by E. Rutherford).
This outstanding idea was perfected by a whole series of remarquable physicists in the years 1920–1930. It even continues to be refined to this day, where it forms the basis of atomic spectroscopy.
<h3>
Answer: <u><em>
It's A Hope this helps </em></u></h3>
<h3>
Explanation: </h3><h3><u><em>
Well this answer was a bit tricky well A and B were like the same definition and thinking A but C and D were both wrong </em></u></h3><h3><u><em /></u></h3>
Water is an inorganic compound.
<h3>What is an Inorganic compound?</h3>
An inorganic compound are those which don't possess carbon atom in it.
On the other hand, organic compound possesses carbon atoms which are
linked to other elements.
Examples of organic compounds include the following:
Water comprises of Hydrogen and Oxygen atoms thereby making it an
inorganic compound.
Read more about Inorganic compound here brainly.com/question/2169750
