l Sprint LTE 6:32 PM @* 34%. O. + Chapter 2 Homework « Chapter 2 Homework Part A

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l Sprint LTE 6:32 PM @* 34%. O. + Chapter 2 Homework « Chapter 2 Homework Part A The carbon atom has a valence of four Select all that apply. O Carbon atom forms multiple covalent bonds with other carbon atoms Previous Answers Request Answer X Incemect: Try Againg2 tempts remaining Part B The carbon-carbon bond has a bond energy that is above the energy of photons of light in the visible range (400-700 nm). o This property allows carbon-carbon bonds to accumulate the energy of photons of light and use it for metabolism reactions. Due to the low bond energy, the carbon-carbon bonds can be broken by exposure to visible light. This is an important property for photosynthesis process. Carbon-carbon bond cannot be broken by exposure to visible light. This ensures the stability of molecules that contain two or more carbon atoms. This property allows carbon-carbon bonds to absorb the light in the visible range that gives the living organisms the possibility to see. Part C A carbon atom can bond simultaneously to two other carbon atoms Select all that apply This property makes possible the generation of long chains of carbon atoms OThis property makes possible the generation of many inorganic molecules OThis property makes possible the generation of many biological molecules. X Ineemect Try Againg 5 attempts remaining

Explanation / Answer

1) Carbon atom forms multiple covalent bonds with other carbon atoms and Carbon atom forms multiple covelent bonds with oxygen - A carbon atom has four electrons in its outermost valence shell. So, it needs four more electrons to complete its octet. Carbon atoms can form double bonds with other carbon atoms in compounds called alkenes or triple bonds in compounds called alkynes. In carbon dioxide, since carbon has four valence electrons, and oxygen has six. Carbon shares two of its valence electrons with each of the two oxygen atoms, forming two double bonds. Since hydrogen has only a single electron in the outer most shell, hence only a single bond is formed between hydrogen and carbon. But the number of single bond may vary accordingly.

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