Covalent Bonds Covalent bonds are formed when atoms share electrons‚ one from each atom in a single bond‚ to form electron pairs‚ usually making their outermost shells up to eight electrons by this means. This would make them more stable‚ less reactive and an electronic structure like a noble gas. They are most frequently formed between pairs of non-metallic elements. Non-metallic elements usually have from four to eight electrons in their outermost shells‚ the so-called valency electrons‚ which
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Chemical bond From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search A chemical bond is an attraction between atoms that allows the formation of chemical substances that contain two or more atoms. The bond is caused by the electrostatic force of attraction between opposite charges‚ either between electrons and nuclei‚ or as the result of a dipole attraction. The strength of chemical bonds varies considerably; there are "strong bonds" such as covalent or ionic bonds and "weak bonds" such
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Question 1 Subordinated debentures are more risky than unsubordinated debentures because the claims of subordinated debenture holders are less likely to be honored in the event of liquidation. Answer True False 1 points Question 2 Junk bonds are also called high-yield bonds. Answer True False 1 points Question 3 The expected yield on junk bonds is lower than the yield on AAA-rated bonds because of the higher default risk associated with junk
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CHAPTER 10 RISK AND RETURN: LESSONS FROM MARKET HISTORY 8. We will calculate the sum of the returns for each asset and the observed risk premium first. Doing so‚ we get: Year Large co. stock return T-bill return Risk premium 1973 –14.69% 7.29% (21.98% 1974 –26.47 7.99 –34.46 1975 37.23 5.87 31.36 1976 23.93 5.07 18.86 1977 –7.16 5.45 –12.61 1978 6.57 7.64 –1.07 19.41% 39.31% –19.90% a. The average return for large company stocks over this period was:
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Chapter 9 Question #1 What characteristics define the money market? -Money market securities are short-term instruments with an original maturity of less than one year. These securities include Treasury Bills‚ commercial paper‚ federal funds‚ repurchase agreements‚ negotiable certificates of deposit‚ banker’s acceptances‚ and Eurodollars. Money market securities are used to “warehouse” funds until needed. The returns earned on these investments are low due to their low risk and high liquidity
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Chemical Bonds Chemical Bond: is the force that holds atoms together in a compound. They form because they lower the potential energy of the charged particles that compose atoms. Chemical bonds can be broadly classified into two types: Ionic and Covalent. Ionic: metal & nonmetal Metals have a tendency to lose electrons and nonmetals have a tendency to gain them. The metal atom becomes a cation and a nonmetal becomes an anion. The oppositely charged ions attract one another and form an ionic
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The family system is the most conspicuous bond in the social scheme of things. This bond ties people to each other with invisible strings of love and care‚ each one bonded to all others in his/her entirety. The family that consists of the elder’s brothers‚ sisters and children are all bound to each other no matter how far away they may be from each other physically. The family is the inspiration of each individual member and‚ above all‚ it is the objective for which each individual member lives
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Price Elasticity on the Supply & Demand Curve Name: ____Sara Memic_________________ Directions: Complete the questions below by referring to the corresponding information or websites located above each question set (A-C). Answer the questions electronically in RED text or hand write the answers‚ scan the document‚ and upload it in this assignment box. A. Watch this 8 minute video clip about demand and answer the questions below: http://www.youtube.com/watch?v=lmr4-ocHjLA 1. Why is calculating
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When a metallic substance shares electrons with a non-metal substance it forms covalent bonds‚ which make molecules. The metal becomes positively charged atoms‚ which means that the number of electrons is never less than the number of protons. Non-metals become negatively charged atoms‚ and now the number of electrons is more than the number of protons. When atoms share electrons of nonmetals then a covalent bond is formed inside the molecule. Monatomic elements are elements that only contain one type
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that make up the solids. These ions become hydrates and have the same relative proportions when in solution and when solid. The more the solid dissolves‚ the more the ion’s concentration increases. This increase and build-up allows for the reverse reaction to occur. In this phase of the reaction the ions crystallise out in order for the reaction to have a greater chance of occurring. Eventually the rate of dissolving will equal the rate of crystallisation. This is the state of saturation
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