O Mail - Navar x |My Grades B Using Avoga x Course Hom x G Calculate the x S Howe would x G periodic tabl x What is the How many m x b Answered: w x openvellum.ecollege.com/course.html?courseld=15827611&HeplD=03ea7d01d46b2af79509b3a02b9d2631#10001 : Apps MyLab Mastering ΑΝΑΤΟΜΥ O COD MAIL CHEM1211HYB_Haque_2020 Hi, Valeria v Sign Out Help Mastering Chemistry Course Home O My Courses View Available Hint(s) Course Tools Reset Help NaOH NANO3 |NazPO4 Largest mass percent Smallest mass percent

O Mail - Navar x |My Grades B Using Avoga x Course Hom x G Calculate the x S Howe would x G periodic tabl x What is the How many m x b Answered: w x openvellum.ecollege.com/course.html?courseld=15827611&HeplD=03ea7d01d46b2af79509b3a02b9d2631#10001 : Apps MyLab Mastering ΑΝΑΤΟΜΥ O COD MAIL CHEM1211HYB_Haque_2020 Hi, Valeria v Sign Out Help Mastering Chemistry Course Home O My Courses View Available Hint(s) Course Tools Reset Help NaOH NANO3 |NazPO4 Largest mass percent Smallest mass percent

Principles of Modern Chemistry

8th Edition

ISBN:9781305079113

Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler

Chapter3: Atomic Shells And Classical Models Of Chemical Bonding

Section: Chapter Questions

Problem 1P: Before the element scandium was discovered in 1879, it was known as “eka-boron.” Predict the...

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(a) Account for formation of the following series of oxidesin terms of the electron configurations of the elementsand the discussion of ionic K2O, CaO, Sc2O3, TiO2, V2O5, CrO3. (b) Name these oxides.(c) Consider the metal oxides whose enthalpies of formation(in kJ mol -1) are listed here. Calculate the enthalpy changes in the following general reactionfor each case:MnOm(s) + H2(g)----->nM(s) + mH2O(g)(You will need to write the balanced equation for each caseand then compute ΔH°.) (d) Based on the data given, estimatea value of ΔHf° for Sc2O3(s).
Nitrogen has a greater first ionization energy than phosphorus. What is the best evidence to supportthis observation?
Rank the following in order of increasingradius:(a) O²⁻, F⁻, Na⁺(b) S²⁻, P³⁻, Cl⁻
(a) Write the electron configuration for the element titanium,Ti. How many valence electrons does this atom possess?(b) Hafnium, Hf, is also found in group 4B. Writethe electron configuration for Hf. (c) Ti and Hf behaveas though they possess the same number of valence electrons.Which of the subshells in the electron configurationof Hf behave as valence orbitals? Which behave ascore orbitals?
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There are some exceptions to the trends of first and succes-sive ionization energies. For each of the following pairs, explainwhich ionization energy would be higher:(a) IE₁ of Ga or IE₁ of Ge(b) IE₂ of Ga or IE₂ of Ge(c) IE₃ of Ga or IE₃ of Ge(d) IE₄ of Ga or IE₄ of Ge
Compared to their neutral atom counterparts, ions will have smaller or larger atomic radii due to their losing or gaining electrons. According to Jensen (2010), Linus Pauling assigned the radius of the oxygen anion (O“) at 140 pm (larger than the neutral atom, 66 pm). On the other hand, the magnesium atom loses 95 ppm from its 160 ppm radius when it loses two valence electrons, forming the magnesium ion. Determine the value of constant B wen constant n is approcimately 8. Unit is in N-m9
Provide complete solution. Determine the planar density of the Mo in (110) given than the atomic radius is 0.154 nm. Express the final answer in atoms per nm^2 and in tenths decimal place.
An unknown metal has an FCC structure a molecular mass of 72g/mol and a theoretical density of 47.9g/cm^3 with that information calcule to atomic radius of the metal express the radius in nm and to three decimal places
Write the full electron configuration of the ion oxide, O2- You can indicate superscript through the ^ symbol (e.g. 3s2 could be written as 3s^2) or use the superscript text formatting tool above.
(a) If the core electrons were totally effective at screeningthe valence electrons and the valence electrons providedno screening for each other, what would be the effectivenuclear charge acting on the 3s and 3p valence electronsin P? (b) Repeat these calculations using Slater’s rules. (c)Detailed calculations indicate that the effective nuclearcharge is 5.6+ for the 3s electrons and 4.9+ for the 3pelectrons. Why are the values for the 3s and 3p electronsdifferent? (d) If you remove a single electron from a P atom,which orbital will it come from?
Rank the following in order of decreasingradius:(a) Ca²⁺, K⁺, Ga³⁺(b) Br, Sr²⁺, Rb⁺