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

Infective endocarditis, Despite improvements in health care, the incidence ...

Despite improvements in health care, the incidence of infective endocarditis has not decreased over the past decades. Infective endocarditis is lethal if not aggressively treated w

Classification of habituating drugs, CLASSIFICATION OF HABITUATING DRUGS - ...

CLASSIFICATION OF HABITUATING DRUGS - There are a large number of drugs on which people become dependent. These are classified into 2 main categories - (i) Psychotropic d

What is consciousness, The importance of the brain in our everyday lives ca...

The importance of the brain in our everyday lives can never be underestimated. The brain has physical properties that are in a constant state of flux. The brain never rests totally

Management of waste amalgam, Management of waste amalgam and wastes contain...

Management of waste amalgam and wastes containing mercury: As all of us know that amalgam is used for restorations very widely.An operator of a dental operation that produces w

Food and diet, could you survive on a diet which contain no carbohydrates

could you survive on a diet which contain no carbohydrates

Myocardial protection-open heart surgery, Myocardial Protection :  To a gr...

Myocardial Protection :  To a great extent, the result of cardiac surgery depends on how well the myocardium is protected during cardio pulmonary bypass. Temporary depression of m

Zoology, what does ICZN stand for

what does ICZN stand for

What are the fruiting bodies present in some fungi, What are the fruiting b...

What are the fruiting bodies present in some fungi? Fruiting bodies are structures made of hyphae that project radially from the superior portion of the peduncle of some fungi.

World conservation strategy proposes various steps , WORL D CONSERVATION S...

WORL D CONSERVATION STRATEGY PROPOSES THE FOLLOWING STEPS - 1.       Preservation of critical habitats. 2.       Protection of wild life in situ (in natural habitats) as we

Indications for coronary artery bypass surgery, Indications for Coronary Ar...

Indications for Coronary Artery Bypass Surgery :  The modalities of treatment for coronary artery disease iuc: (1) medical, (2) angioplasty and stenting, and (3) coronary arte

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