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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General, Organic, and Biological Chemistry
- 1) 3D0 Example 5: aluminum sulfate Al is +3; SO4 is -2, so the correct formula must be: Al2(SO4)3 2x(+3) + 3x(-2) =0 Again note how each of the numbers is crisscrossed, the 3 from the aluminum going to the sufate, and the 2 from the sulfate going to the aluminum. Exercise: Write the formula for each combination of ions below. OH- HCO3 PO43- Co,2- s2- Na+arrow_forwardX Exercise Q1. Name the following compounds (a-d): S N da p N=N (b) (a) (c) N (d)arrow_forwardReview ABookmark Unit 5 Mole Concept S21 / 2 of 16 What is the molecular weight of a sample of ferrous sulfide heptahydrate (FES•7H2O)? (Round all numbers to the hun A. 105.94 B. 214.06 O C. 334.05 O D. 225.93arrow_forward
- PROGRESS 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_forwardExercise 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_forward
- ▾ Part A Consider the mystery element "Z" Element Z is a powdery solid that does not conduct electricity. It reacts with metal to form MZ compounds, where Z is the -2 oxidation state. What is the likely identity of Z? OF OS 00 O CI O None of these is correct. Submit Request Answerarrow_forwardPractice 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_forwardProblem 2-3 Name the elements given in Problem 2-2. Write the symbols of their atomic nuclei.arrow_forward
- Please show all work 14arrow_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_forwardThe question is in the picture.arrow_forward
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