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Linus Carl Pauling was an American chemist, biochemist, peace activist, author, and educator. He is revered as the founder of the fields of molecular Biology and quantum chemistry.
What else can I help you with?
Which element has the highest electronegativity in periodic table?
Fluor: 4,1 (Paulings scale)
What was Linus Paulings life like?
He was an American chemist, biochemist, peace activist, author, and educator. Also the only person to win two unshared Nobel Prizes.
What evidence did watson and crick use to disprove linus paulings triple helix thery?
Watson and Crick used X-ray diffraction data and molecular modeling to disprove Linus Pauling's triple helix theory of DNA. Their analysis showed that the structure of DNA was a double helix, not a triple helix as proposed by Pauling. This discovery revolutionized the understanding of DNA structure and function.
Who influenced Francis Cricks work?
Francis Crick was mainly influenced by the work of Max Delbrück, Linus Pauling, and Erwin Schrödinger. Delbrück's research on bacteriophages, Pauling's work on the structure of proteins, and Schrödinger's ideas about molecular genetics all played a role in shaping Crick's thinking about the nature of genetic information and the structure of DNA.
State the definition and trend for electronegativity?
Electronegativity is the ability for an atom to attract electrons. It is expressed in numeric values in Paulings (a unit named after a chemist). On the periodic table it increases from left to right across a period. It decreases down a group on the periodic table.
What is oxidation number of hydrogen inphospine?
+1, following convention that H is +1 except in the metal hydrides where it is -1. However you may be taught to assign oxidation numbers using electronegativities. Using Paulings scale (as in wikipedia), H is slightly more electronegative so using that you get H is -1. (Some versions of Pauling scale have P as slightly more electronegative than H!) There are t of different electronegativity scales (Allred-Rochow, Allen) in all of them have H and P have very similar electronegativities but differ as to which is the most electronegative- use the one recommended by your teacher otherwise you may be marked wrong.
Why do transition metals with higher oxidation states tend to form covalent bonds?
One simple rationalisation for this is Paulings principle of electroneutrality. This simply put says that bonding schemes that reduce charge separation are more stable. This is not a simple area- many high oxidation states are fluoride compounds- and the very weak F-F bond makes the "elimination" of F2 molecules less likely and hence stabilises the high oxidation state compound. Many high oxidation state compounds are oxides and there are many opportunities for pi bonding interactions in these. The short V=O in vanadyl complexes is a case in point.
