Chemistry Practice Problems Electron Configuration Practice Problems Solution: Identify the element whose ground-state electron c...

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Solution: Identify the element whose ground-state electron configuration is [Ar] 4s2 3d10 4p2.

Problem

Identify the element whose ground-state electron configuration is [Ar] 4s2 3d10 4p2.

Solution

When finding the identity of the element, you’ll have to identify the atomic number of that element. Recall that every single element in the periodic table has a corresponding atomic number.

The atomic number of an element is always equal to the number of protons of that element. And when the element is neutral (charge = 0), the number of protons is equal to the number of electrons.

Neutral element:          Atomic number = # protons = # of electrons

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