The complete photoelectron spectrum of an unknown element is shown above. The fr

Question

The complete photoelectron spectrum of an unknown element is shown above. The frequency ranges of different regions of the electromagnetic spectrum are given in the table below. To generate the spectrum above, a source capable of producing electromagnetic radiation with an energy of 7 Times 10^2 kJ per mole of photons was used. Such radiation is from which region of the electromagnetic spectrum? Justify your answer with a calculation. A student examines the second ionization energy of the element is 3.88 times 10^3 kJ/mol. To refuse the proposed interpretation of the spectrum, identify the following The subshell from which an electron is removed in the second ionization of an atom of the element The subshell that corresponds to the second peak of the photoelectron spectrum above

Explanation / Answer

1) the corresponding energy

7 X 10^4 KJ corresoponds to

E = h X frequency

h = plancks constant = 6.626 x 10¯34 J s

So frequency = 1.1022 X 10^18 rad/sec

It lies in the range of x-ray

2) a) as per the energy given it will be

2p orbital

3s orbital

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