Concept explainers
Interpretation:
Most abundant element in Earth’s crust and universe as a whole has to be chosen from the given options.
Concept Introduction:
Element is a pure substance and it cannot be broken down into simpler pure substance by chemical means like
Elements that are laboratory synthesized are radioactive in nature and they convert back into the original naturally occurring element by emission of radiation. All the elements that occur naturally are not evenly distributed on earth and universe.
Radiations that are emitted from stars can be used to estimate the elemental composition of universe. This indicates that hydrogen and helium are mostly dominant. On Earth’s crust oxygen and silicon are the two elements that account for about
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- Answer: H I answered: H because stable. H Is this why or H N: G₂- I-Z 1 G + OH answer why not? +4₂0 my # I thought that the charges. still considered +4₂0 would be more incorrect?arrow_forwardReview - A Bookmark 5 Mole Concept S21 / 8 of 16 How many moles of ethanol (C>H5OH) are present in sample with 1.50x1024 molecules? O A. 2.49 moles B. 3.99 moles O C. 2.01 moles O D. 3.15 molesarrow_forwardWhich of the following element-classification pairings is incorrect? a. 7Nrepresentative element b. 26Fetransition element c. 75Reinnertransition element d. no correct responsearrow_forward
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