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timama [110]
3 years ago
13

The shielding of electrons gives rise to an effective nuclear charge, Zeff, which explains why boron is larger than oxygen. Esti

mate the approximate Zeff felt by a valence electron of boron and oxygen, respectively?
Chemistry
1 answer:
nadezda [96]3 years ago
3 0

<span>
</span>The solution would be like this for this specific problem:

<span> (atomic number) - (core electrons)</span> 

Boron:

Atomic number: 5 
Core electrons: 2

Boron will have the following: 2 core electrons and 3 valence electrons.
(atomic number) - (core electrons)------> (5) - (2) = +3 

<span>
</span><span>Oxygen: </span><span>
<span>Atomic number: 8 </span>
<span>Core electrons: 2 </span></span>

<span>Boron will have the following: 2 core electrons and 6 valence electrons. </span><span>
<span>(atomic number) - (core electrons)------> (8) - (2) = +6 |

So the answer would be +3 and +6</span>.</span><span>

I hope this helps and if you have any further questions, please don’t hesitate to ask again. </span>

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Your apple juice has a molarity of 3.4 M and a volume of 0.895 litres. What does a student have to do to decrease the molarity t
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Explanation:

Hello there!

In this case, for this dilution-like problems, we need to figure out the final volume of the resulting solution so that we would be able to obtain the correct volume of diluent (water) to be added. In such a way, we can obtain the final volume, V2, as shown below:

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