Simplified. the absorption spectra of ions have been used to identify the presence of the elements in the atmospheres of the sun and other stars. what is the energy of a photon (in j) that is absorbed by he+ ions, when an electron is excited from the bohr orbit with n = 1 to the n = 4 state? the energy of an electron in the nth level is

Answer : The energy of a photon absorbed by ions is

Explanation :

The energy of an electron in the nth level is,

where,

= energy of an electron in the nth level

B = constant =

n = number of energy level

Z = charge on nucleus or number of protons

First we have to calculate the energy of an electron for n = 1 level.

Z = charge on nucleus or number of protons for helium atom = 2

Now we have to calculate the energy of an electron for n = 4 level.

Z = charge on nucleus or number of protons for helium atom = 2

Now we have to calculate the energy of a photon that is absorbed by ions.

Therefore, the energy of a photon absorbed by ions is

the formula would be mgso4

mgso[subscript]4

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.