Interpretation:
Concerning in Earth’s crust the atom percent elemental abundance, the statement that is incorrect 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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EBK GENERAL, ORGANIC, AND BIOLOGICAL CH
- X Exercise Q1. Name the following compounds (a-d): S N da p N=N (b) (a) (c) N (d)arrow_forward16O and 18O are isotopes of oxygen used by climate scientist as proxies of earth's past temperature. Which of the following is true about these isotopes? a. They contain the same number of neutrons b. They contain the same number of protons c. They contain the same number of electrons d. More than once correct responsearrow_forwardExercise 5: Name the following compounds containing polyatomic anions. m. ZnCr₂O7 n. Pb(BrO3)2 o. Hg2(BrO2)2 p. Na3PO4 q. KNO₂ a. NaClO3 b. Ca(ClO4)2 c. Fe(ClO₂)3 d. Al(CIO) 3 e. KNO3 f. (NH4)2SO4 g. (NH4)2SO3 h. (NH4)2S2O3 i. CsC₂H3O2 j. CuCrO4 k. BaCO3 1. KMnO4 r. Ag2SO4 s. Na₂C₂O4 t. Au(OCN)3 u. AuSCN v. Ni3(ASO4)2arrow_forward
- Exercise 7. Give the name or write the formula for the following. a. HI (aq) b. HNO₂ (aq) c. H₂Se (aq) d. H₂CrO4 (aq) e. HBrO4 (aq) f. HSCN (aq) g. HBrO₂ (aq) h. sulfuric acid i. oxalic acid j. phosphoric acid k. hydrobromic acid 1. bromic acid m. phosphorous acid n. nitric acidarrow_forwardAnswer: 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_forwardPROGRESS CHECK: 2.1. In the following drawing, the green spheres represent atoms of a certain element. The purple spheres represent atoms of another element. If the spheres touch, they are part of a single unit of a compound. Does the following chemical change represented by these symbols violate any of the ideas of Dalton's atomic theory? If so, which one? + 00 Starting materials Products of the change 10p ond lUp Wearrow_forward
- Practice Task/Assessment Complete the table below. ION TYPE OF ELEMENT TYPE OF ION CHARGE 1. Zn+2 2. Cr+3 3. At- Fill in the blanks. For the ionic compound Ag2S, there is/are ___ Ag+ ions and __ S- The total charge of Ag2S is ___. ___ cation and ___ anion formed Potassium iodide (KI). ___ cation and ___ anion formed Potassium chloride (KCl). Write the chemical formula of the ionic compounds formed from the following ions. Potassium and Iodine ions Mg +2 + Br-1arrow_forwardExercise 3: Name the following compounds using the preferred IUPAC nomenclature. a. XeF4 b. CuCl с. Mg(CN) d. Au(OH)з e. PC13 f. Cs;N g. CrCl; h. CaO2 i. Cus j. SO2 k. N2O4 1. Ag:0 m. MnO2 n. SnCl2 o. Hg:0arrow_forwardData Table Water, H20(1) Unknown Metal (s) mass (g) 180 mass (g) 210 T, (°C) 23 T, (°C) 98 T; (°C) T, (°C) 38 38 Calculation for finding Cmetal:arrow_forward
- Problem 2-3 Name the elements given in Problem 2-2. Write the symbols of their atomic nuclei.arrow_forwardCourse Home Katoms, ions and naming molecular and ionic substances Sample Exercise 2.3 Practice Exercise 1 with feedback Part A - Writing Symbols for Atoms Which of the following is an incorrect representation for a neutral atom: O {Li o Ag O Cu Submit Request Answer Provide Feedback hparrow_forwardProblem 5: Lithium has two isotopes: lithium-6 with an atomic mass of 6.0151 amu (atomic mass unit) and lithium-7 with an atomic mass of 7.0160 amu. If the average atomic mass of lithium is 6.941 amu, calculate the natural abundances (in %) of the two isotopes. (10 points)arrow_forward
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