Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
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.
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.
Q. What are peristaltic movements? What is their role in human digestion? Peristalsis is the process of synchronized contractions of the muscular wall of the digestive tube, Pe
In interspecific sterility, the failure in mating occurs because of inability of the sperm to reach the egg in animals and the pollen to reach ovules in plants. In plailts interspe
Q. How different is the growth according to the biotic potential of a viral population from the growth according to the biotic potential of a bacterial population? The growth c
Heliozoans - Protozoan Heliozoans are spherical protozoan that occur in the sea or in still bodies of fresh water. They are mainly located in the bottom debris. Fine needle li
Define the Roller Drying (Drum drying) Method? One of the important techniques for drying liquid food products is the roller drier. Like spray drying, roller drying can only be
BEE DISEASES - Suffer from nosema diseases caused by Nosema apis. SILK WORM DISEASES - Pebrine disease caused by Nosema.
Consequences of Aging It is hard to enumerate the general consequences of aging in different animals. Gradual loss of reproductive ability, neuromuscular coordination and not
Explain the Nutrition of Fungi? Fungi grow in moist environment and are chemoorganoheterotrophs. What do we mean by chemoorganoheterotrophs? The term chemotroph describes organ
molecular test protocol for infectious disease and full test procedure and scientific flyer
CHLOROPLASTS Schimper (1883) coined the term chloroplastid for green plastids. Mayer called them Autoplast. Chloroplast name proposed by Erera. Green plastids wi
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!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd