9. (LO 6) Which of the following is NOT true? A. An isotope of calcium with 20 neutrons and 18 electrons must be a 2+ ion with mass number of 40. B. A 3+ ion of the isotope Fe-53 must have 27 neutrons and 23 electrons. C. An atom of chlorine for which A = 37 would have 17 protons, 17 electrons, and 20 neutrons. D. An atom that has an atomic number of 53 and 79 neutrons in its nucleus must be 1-132. E. Choose this answer if all of the choices here are correct.

9. (LO 6) Which of the following is NOT true? A. An isotope of calcium with 20 neutrons and 18 electrons must be a 2+ ion with mass number of 40. B. A 3+ ion of the isotope Fe-53 must have 27 neutrons and 23 electrons. C. An atom of chlorine for which A = 37 would have 17 protons, 17 electrons, and 20 neutrons. D. An atom that has an atomic number of 53 and 79 neutrons in its nucleus must be 1-132. E. Choose this answer if all of the choices here are correct.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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5. Fill in the empty cells in the table below. Atomic number Mass Number Number of Neutrons Number of Electrons 54Fe²+ 26 56 28 24 78 35 95 45 46
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a. Using the average atomic mass of carbon, calculate the mass (in amu) of 165 carbon atoms. amu b. Using the average atomic mass of potassium, calculate the mass (in amu) of 8.70 × 106 potassium atoms. amu c. Using the average atomic mass of lithium, calculate the mass (in amu) of 3.40 × 10²³ of lithium atoms. amu d. Using the average atomic mass of magnesium, calculate the mass (in amu) of 4 magnesium atoms. amu e. Using the average atomic mass of iodine, calculate the mass (in amu) of 8.500 × 10²³ iodine atoms. amu
Which of the following statements must be true for the following equation to apply? En=−(2.18×10^−18J⋅Z^2)/n^2 Select one: a. The atom is neutral. b. The atom has only one proton. c. The atom has only one electron. d. The atom has a positive charge.
5. Complete the following table of neutral atoms of isotopes. Nuclear Symbol 39Sr Ne 33P Atomic Number 50 Mass Number 82 C. d. Inactive gases are called e. Elements in the middle of the periodic table The sum of the protons and neutrons Protons Malleable is a property of a The vertical columns are called families or 20 Neutrons f. g. The elements are arranged by atomic h. Calcium is a(n) metal. i. A has properties of both metals and nonmetals 22 6. Answer the question or complete the following statements about the Periodic Table. a. Group I metals are called b. 76 Electrons 34 lectron dot symbol foroach of following
al pages that helped with this content 88 Element Symbol H He Li Be B C Atomic Number 2 01 11451 Number of protons 1 2 Total number of electrons 1 2 (ve weh Shell Model n = 1, 2, 3, ... OM LUISUA G COLOUR CHE U SU GUS 1566 llada) er darge 11 si no wo miestod auspun orld mo 329woldat bibohogart no wos obleas idat a GUSLOA ( ET VIL SISCIA SOMAG GUS COCH LOA leborn and to poh topt uger apon Es Core Electrons 0 be owe Suc Jaum duob Jeurn yhodomos pro 29mco bicort nor over by 11,aphild stil 31 to S Valence electrons LAUK ratall 1 2 ncpris-Euro Lebusura por enc Column on the periodic table Lewis dot structure 1H: 8 He: Li Simplified electron arrangement 1e 2e He is special small-so not octet, but full. Will electrons be lost or gained to complete the complete the outer shell? lose le Usual ionic charge 1+ Noble gas-full outer shell-will not lose or gain e- For this class C family will only share e- no ions
Explanation on paper to write it down so its eaiser to understand
6. Who discovered the nucleus of the atom? A. Dalton B. Rutherford C. Millikan D. Thomson 7. The five spheres below represent Se, Se2-, O, H, and S, not necessarily in that order. 37 pm 72 pm 100 pm 114 pm 196 pm Which answer correctly orders all five species from smallest to largest? A. O х"(g) + e B. X*(g) → X*(aq) С. Х(g) + e -> X (з) D. X*(g) + e→ X(g) 9. Which of the following compounds are insoluble? A. Pbl2 В. CaSO4 С. CSCI D. Nazs E. Both A and B 10. Assign oxidation numbers to the chlorine atom in each of the following compounds: Cl2, HCI, ClO3, CIF3, PCI3 А. О, —1, +6, +3, -1 В. О, —1, +5, +3, -3 С. 0, —1, +5, +3, —1 D. 0, -1, +3, +3, –1
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4. An ion of iron has an 26 protons, 30 neutrons, and 23 electrons. What are its atomic number, atomic mass, and net charge? O A. atomic number = 26, atomic mass = 56, net charge = 3+ O B. atomic number = 26, atomic mass = 56, net charge = 3- O C. atomic number = 30, atomic mass = 56, net charge = 3+ %3D O D. atomic number = 56, atomic mass = 26, net charge = 3- %3D
These isotopes 2. Sulfur exists in nature as three isotopes. If the atomic have isotopic masses 32.00, 33.00, and 34.00. weight of sulfur is 32.08, which one of the following statements must be correct? a. b. C. d. e. f. g. 34s is more abundant than either 32s or 33g 32s is less abundant than 34s 32s is more abundant than either 33s or 34g 33s is the most common isotope 33g is less abundant than 34s 34s must be the most abundant isotope of sulfur the question is impossible to answer without more information