Cowley a fake Test chapter 12:FX Minbox (71)-goselandashlee eMulvaneCenter ey.bl

Question

Cowley a fake Test chapter 12:FX Minbox (71)-goselandashlee eMulvaneCenter ey.blackboard.com/webap ke/launch.jsp?course assessment id-132518 1&course; id 1 QUESTION 5 Which of the following was not a scientific accomplishment by Linus Pauling? Explained the unusual stability of benzene O invented the concept of electronegativity O Devised an electronegativity scale for elements O Identified the helical structure of selected proteins. O Discovered the double helix structure of DNA QUESTION6 What is the term for the bond resulting from the attraction between a positively cl negatively charged anion? coordinate covalent bond onic bond nonpolar bond

Explanation / Answer

5.The double helical structure of DNA was not a scientific accomplishment of Linus Pauling. He proposed a triple helix structure for DNA but was disproved by double helix model of James Watson and Francis Crick.

6. The bond resulting from attraction between positively charged cation and negatively charged anion is ionic bond. It is the electrostatic attraction between oppositely charged ion. Hence answer is ionic bond.

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