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- BrandCarbon
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About us: The only type oflifewe knowis based oncomplexcarbonchemistry.Isthisthe onlyoptionpossible?Can weimaginea silicon-based life?
Lifeaswe know it, weare dealingwithacarbon-based one, which useswateras a medium forconductingnumerouschemical reactions andoxygento generateenergyduringmetabolicprocesses.All forms oflifeon our planetshare the samebiochemistry.Starting fromthis lastsentenceIwould say thatthis is the onlykind oflifepossiblein the universe.But thatwouldbe akind of "carbonocentrism". Alimitedvision,of whatit would be possiblein anothercorner of theuniverse? Insimilarconditionsthe laws of physicsare the samewherever wegoin the universe.Starting fromthis statementmeans thatwe can usewhatsciencetells usaboutchemicalreactionsstudiedon Earth. So, knowing that siliconis about140times moreabundantthancarbon, how come that life-forms here on Earth, are not based on this item?
It's all aboutelementary chemistry. Carbonandsiliconare in the samecolumnof theTableofMendeleevandtheiratomshavethe lastlayerthe same number ofelectrons: 4. Both elementscan be combinedinverycomplexchemical compounds, whichwould entitleusto assumethe possibilityof lifebasedon silicon. Not quiteso.To completethevalenceelectronlayerwherefor carbonisneededonlyfourelectrons,which makescarbon-carbontypebondsto be extremelystrong. Rememberdiamond,the hardestknown material.
Lifeaswe know it, weare dealingwithacarbon-based one, which useswateras a medium forconductingnumerouschemical reactions andoxygento generateenergyduringmetabolicprocesses.All forms oflifeon our planetshare the samebiochemistry.Starting fromthis lastsentenceIwould say thatthis is the onlykind oflifepossiblein the universe.But thatwouldbe akind of "carbonocentrism". Alimitedvision,of whatit would be possiblein anothercorner of theuniverse? Insimilarconditionsthe laws of physicsare the samewherever wegoin the universe.Starting fromthis statementmeans thatwe can usewhatsciencetells usaboutchemicalreactionsstudiedon Earth. So, knowing that siliconis about140times moreabundantthancarbon, how come that life-forms here on Earth, are not based on this item?
It's all aboutelementary chemistry. Carbonandsiliconare in the samecolumnof theTableofMendeleevandtheiratomshavethe lastlayerthe same number ofelectrons: 4. Both elementscan be combinedinverycomplexchemical compounds, whichwould entitleusto assumethe possibilityof lifebasedon silicon. Not quiteso.To completethevalenceelectronlayerwherefor carbonisneededonlyfourelectrons,which makescarbon-carbontypebondsto be extremelystrong. Rememberdiamond,the hardestknown material.
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Carbon Silicon
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