How many electrons should we expect to see associated with the lowest energy peak in the photoelectron spectrum of the element bromine (br)?

There are five electrons associated with the lowest energy peak in bromine photoelectron spectrum.

Further explanation:

Photoelectron spectroscopy:

The photoelectron spectroscopy is a spectroscopy that is used to determine the electronic configuration of the elements.

In other words, this method is very helpful in identifying the electronic structure of the atom. In this method, sample of atoms is exposed under the high energy radiation such as UV or X-rays. This bombardment of high energy rays causes the ejection of various electrons. Then photoelectron spectrometer measures the number of electron ejected and their kinetic energy.

For example, ground state configuration of lithium is . This shows two peaks in photoelectron spectrum. These two peaks representing two subshells of lithium atom. The first peak is related to the 1 electron with lower binding energy while the second peak is related to the two electrons with higher binding energy.

The atomic number of bromine is 31 thus, the ground state of electronic configuration of bromine (Br) is .

Since the lowest energy peak is related to the lowest binding energy, and 4p electrons have lowest binding energy. Therefore, there are five electrons associated with the lowest energy peak in bromine photoelectron spectrum.

Learn more:

1. The neutral element represented by the excited state electronic configuration:

2. Number of covalent bond formed by carbon:

Answer details:

Grade: Senior school

Subject: Chemistry

Chapter: Photoelectron spectroscopy

Keywords: Photoelectron, spectroscopy, photoelectron spectrum, bromine, lowest energy peak, element, electrons, electronic configuration of bromine.

2fe + 3h2so4 -> fe2(so4)3 + 3h2

it is necessary to balance equations in order to get the proper amount of reactants as well as products in order not to make a miscalculation.

you cannot change the subscripts as that would change the substance itself. for instance, diatomic elements such as h2 only have the subscript two when a gas. another example would be so4, if you were to change the subscript, the element would no longer be sulfate.

we change the coefficients instead as that only changes the number of molecules rather than the substance itself.

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