Protons and Neutrons are located in the nucleus of a neon atom.
The given formula for energy is:
(1)
where,
h = planck's constant
c =
=
(frequency)
n = energy level
Substitute the given value of n and
in formula (1)
![Energy = (-2.18 \times 10^{-18 }J)\times (\frac{1}{5^{2}})](https://tex.z-dn.net/?f=Energy%20%3D%20%28-2.18%20%5Ctimes%2010%5E%7B-18%20%7DJ%29%5Ctimes%20%28%5Cfrac%7B1%7D%7B5%5E%7B2%7D%7D%29)
= ![(-2.18 \times 10^{-18 }J)\times (\frac{1}{25})](https://tex.z-dn.net/?f=%28-2.18%20%5Ctimes%2010%5E%7B-18%20%7DJ%29%5Ctimes%20%28%5Cfrac%7B1%7D%7B25%7D%29)
= ![(-2.18 \times 10^{-18 }J)\times (0.04)](https://tex.z-dn.net/?f=%28-2.18%20%5Ctimes%2010%5E%7B-18%20%7DJ%29%5Ctimes%20%280.04%29)
= ![-0.0872 \times 10^{-18 }J](https://tex.z-dn.net/?f=-0.0872%20%5Ctimes%2010%5E%7B-18%20%7DJ)
= ![-8.72 \times 10^{-20 }J](https://tex.z-dn.net/?f=-8.72%20%5Ctimes%2010%5E%7B-20%20%7DJ)
Thus, energy of an electron in the hydrogen atom when n = 5 is ![-8.72 \times 10^{-20 }J](https://tex.z-dn.net/?f=-8.72%20%5Ctimes%2010%5E%7B-20%20%7DJ)
Answer:
Physical properties are used to observe and describe matter. Physical properties can be observed or measured without changing the composition of matter. These are properties such as mass, weight, volume, and density.