Answer:

Explanation:
Suppose an electron makes transition from n initial (ni) to n final (nf) then formula for wavelength is given by,

Where,
- λ is wavelength of photon
- Rʜ is rydberg constant, the value of Rʜ is
109690 Cm-¹ in <em>Puri Sharma Pathania</em> standard book of physical chemistry &
109737 Cm-¹ according to <em>Wikipedia</em>
- Z is the atomic number of atom, for hydrogen Z =1,
& according to given data, ni = 5, nf = 3
Solution:
Let's solve for wavelength,
Substituting all the given data in above formula,






Now we know that, 1 cm = 10000000 nm,
Converting the wavelength from Cm → Nm




Explanation:
proton normally = atomic number
protons = 9
It would be +3
Since the number of protons and electrons must be equal in an atom for it to be neutral, if it looses electrons it becomes positively charged ion and if it gains electrons it becomes negatively charged ion.
Make sure to list known values on the side. Based on the wording of the question, we know that pressure is constant and moles is constant. You can rearrange the ideal gas equation and solve for the volume.
Answer:1
Explanation:i hope u have a wonderful night and stay safe