Explain the bohr''s model, Biology

Assignment Help:

Explain the Bohr's model?

Bohr's Model :  Electrons move around the nucleus at tremendous speeds and occupy most of the space in an atom. The exact position or location of an electron at any given moment can only be predicted on the basis of probability.
In a widely accepted model of the atom originally proposed by Neils Bohr, electrons move in spherical spaces called orbitals, or shells, which correspond to different energy levels. Electrons are distributed according to their energy levels, with the higher energy electrons residing in the outer shells.
The innermost shell contains only 2 electrons. In common elements, the next outer shells contain 8 electrons each.

1355_bohr model.png

Atoms either gain, lose, or share electrons in the outer shells. Because the outer shells of many atoms are incomplete, most atoms will interact with other atoms during chemical reactions to achieve stable outer shells.
The number of electrons that an atom must either gain, lose, or share to complete the outer shell is known as its valence, or oxidation number. For example, carbon has six electrons, two in its first energy level and four in the outer level. Thus, it can form a stable outer shell by gaining, losing, or sharing four electrons to complete its outer shell when it joins, or bonds, with another atom or atoms to form a compound.
The following table lists the oxidation numbers of some important ions frequently used in Biology.

1576_table bohr model.png


Related Discussions:- Explain the bohr''s model

What are some functions of the cartilages in the human body, What are some ...

What are some functions of the cartilages in the human body? Cartilages are responsible for the structural support of the nose and ears. The trachea and the bronchi are also or

Experimenting, what are some examples of eperimenting palants?

what are some examples of eperimenting palants?

What is reverse cholesterol transport, Q. What is Reverse Cholesterol Trans...

Q. What is Reverse Cholesterol Transport? HDL is involved in reverse cholesterol transport whereby cholesterol surplus to cellular requirements is returned from the periphery t

filtration, It is the process of separating colloidal and suspended impuri...

It is the process of separating colloidal and suspended impurities from water by passing it through a porous bed made of fine sand and other proper sized granular materials. Filtra

Determine the accession number for the related gene-locus, Please answer th...

Please answer the following two questions on Sequence X: 1) DNA sequence databases 1. What is the EMBL-Bank accession number for this sequence (use BLAST)? 2. Which gen

Lipid profile, Abnormalities in the lipid profile are found in patients wit...

Abnormalities in the lipid profile are found in patients with diabetes mellitus. The lipid abnormalities increase the risk of heart disease in diabetics and hence should be regular

What is quaternary structure of a protein, Q. What is quaternary structure ...

Q. What is quaternary structure of a protein? Do all proteins have quaternary structure? The quaternary protein structure is the spatial conformation due to interactions among

Glanders, Glanders The glanders is caused by Burkholderia mallei (previous...

Glanders The glanders is caused by Burkholderia mallei (previously known as Malleomyces mallei) and it is a serious contagious disease of equines. Infected equidae are the reservo

What is the phellogen? what its function, What is the phellogen? What its f...

What is the phellogen? What its function? The Phellogen also called as cork cambium is the meristematic plant tissue responsible for the formation of the periderm (the covering

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd