Solution :. Very Important Questions. FAQs on Chemical Bonding. National Education Day: e-learning Transforming Educational Landscape National education day: e-learning transforming educational landscape. By using this site you agree to the use of cookies. Check our Cookie Policy for more details.
Also, Oxygen is a group VIA element in the periodic table and contains six electrons in its last shell. Now, we know how many electrons are there in valence shells of hydrogen, carbon and oxygen atoms. Total electron pairs are determined by dividing the number total valence electrons by two. For, HCO 3 - ion, Total pairs of electrons are twelve in their valence shells. Hydrogen atom cannot be a center atom because hydrogen can only keep two electrons in last shell.
Because, carbon can show higher valance than oxygen, carbon has the higher priority to be the center atom in HCO 3 - ion. Also, carbon is more electropositive than oxygen, it again proves, carbon should be the center atom. After determining the center atom and sketch of HCO 3 - ion, we can start to mark lone pairs on atoms.
Remember that, there are total of twelve electron pairs. Because three atoms have charges, above structure is not stable. Determine the formal charge of each atom. 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 Resonance Structures concept. You can view video lessons to learn Resonance Structures. Or if you need more Resonance Structures practice, you can also practice Resonance Structures practice problems. Our expert Chemistry tutor, Sabrina took 6 minutes and 43 seconds to solve this problem. You can follow their steps in the video explanation above. If you forgot your password, you can reset it.
Join thousands of students and gain free access to 46 hours of Chemistry videos that follow the topics your textbook covers. We'll put two between the atoms to form chemical bonds--we've used and then on the atoms on the outside, 10, 12, and Then we'll put the remaining 4 here to fill the octet on the Oxygen: We've used all 24 valence electrons. Hydrogen has 2 valence electrons; its octet is full.
And then the Oxygens each have 8 valence electrons, so their octets are satisfied, as well.
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