# Problem: Write ground-state electronic configurations for the following atoms or ions and give the number of unpaired electrons:P(g)                                                                                   ___   unpaired electrons Ti(g)                                                                                   ___   unpaired electrons Ni2+(g)                                                                               ___   unpaired electrons

###### FREE Expert Solution
98% (455 ratings)
###### FREE Expert Solution

For this problem, we first need to write the ground state electron configuration before we can get the number of unpaired electrons. We'll use the condensed noble-gas notation for this problem. This just means that we use the symbol of the nearest noble gas that comes before our element. We use this to represent the first part of the electron configuration.

A) For P(g), we start by finding the noble gas that we'll use and we'll see in the periodic table that it would be Ne. Now we still have to finish the electron configuration since we have more electrons in P. Also note that this is just a neutral element so no need to add or subtract electrons. There would be 5 electrons that would be in excess of Ne so we write the electron configuration as follows:

98% (455 ratings)
###### Problem Details

Write ground-state electronic configurations for the following atoms or ions and give the number of unpaired electrons:

P(g)                                                                                   ___   unpaired electrons

Ti(g)                                                                                   ___   unpaired electrons

Ni2+(g)                                                                               ___   unpaired electrons

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Paramagnetism and Diamagnetism concept. You can view video lessons to learn Paramagnetism and Diamagnetism. Or if you need more Paramagnetism and Diamagnetism practice, you can also practice Paramagnetism and Diamagnetism practice problems.

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