Problem: What element has an electron configuration of [Kr] 5s24d105p2 :(a) As (b) Sb (c) I (d) Sn (e) Pb

FREE Expert Solution
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FREE Expert Solution

Determine the number of electrons in the electron configuration and figure out which has atom has the same electrons

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

94% (185 ratings)
Problem Details

What element has an electron configuration of [Kr] 5s24d105p2 :

(a) As 

(b) Sb 

(c) I 

(d) Sn 

(e) Pb

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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 The Electron Configuration: Condensed concept. You can view video lessons to learn The Electron Configuration: Condensed Or if you need more The Electron Configuration: Condensed practice, you can also practice The Electron Configuration: Condensed practice problems .

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Our tutors rated the difficulty of What element has an electron configuration of [Kr] 5s24d105p... as medium difficulty.

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Our expert Chemistry tutor, Shreya took 2 minutes to solve this problem. You can follow their steps in the video explanation above.

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Based on our data, we think this problem is relevant for Professor MacFarland's class at CSU.