Interpretation:
The first and second ionization energies (
Concept introduction:
Ionization energy (
The first ionization energy (
The second ionization energy (
Effective nuclear charge increases from going left to right in a period (increasing
Electron affinity (
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Chemistry
- 1. Answer the following: a. If a car has an EPA mileage rating of 30.0 miles per gallon, what is this rating in m L-1? (1 gallon = 3.785 liter, 1 mile = 1.609 meter.) b. Given the isotopic abundance and mass, what is the atomic mass of Boron? Isotope Mass (amu) Abundance (%) B-10 10.013 19.9 B-11 11.009 80.1 c. A solution has a [H+] of 2.5 ×10-3 M. What is the pH of this solution?arrow_forwardr Mt. Zion A-B11-1 X K Jennessy Greenough - Atoms, M X O Meet - zgt-jahh-bnt New Tab A web.kamihq.com/web/viewer.html?state%=%7B'ids"%3A%5B"1YoSVtEOUG4Q5sa4dQDaBQRxVYgR7TCVT"%5D%2C"authuser"%3A"0"%2C"1 ent Edu O P A Mt. Zion A-B Jennessy Greenough - Atoms, Molecules, Matter Review and Counting Atoms.p + 100% elements that are chemically bound together. Part Two - Visual Summary Identify whether the following is an atom or molecule and an element or compound. Explain your answer. Diagram Atom or Molecule Element or Compound Explain One particle of on ly one type atom Element Now draw your own! Atom Element Molecule Compound DIarrow_forwardKAtoms Elements and lons - Attempt 1 Counting Protons and Neutrons Reset Help 20 70 Element Number of Number of Number of Mass number 22 79 symbol protons electrons neutrons 32 Ga Ca 42 35 Ge 32 38 38 42 Sr 79 35 44 Submit P Type here to search 80arrow_forward
- 251) (252) 257) (258) Question 3 An element has the following electron configuration: [Ne] 3s? 3p³. How many core and valence electrons does this element have? O 12 core and 3 valence O 10 core and 5 valence 2 core and 13 valence 5 core and 10 valence 12 core and 5 valence 8 core and 7 valencearrow_forwardThe element which has four valence electrons is ________.( A) H B) Na C) Mg D) Si E) Sarrow_forwardDetermine the percent abundance for J-67 and J-68, given the following data: The average atomic mass for J is 65.96 amu. Atomic % Isotope weight abundance J-64 63.9296 6.744 J-66 65.9449 90.654 |J-67 66.9154 ?? J-68 67.9113 ??arrow_forward
- 1. Which isotope in each of the following pairs should be more stable? a) Ca or Ca b) "P or P c) 1Ne or Ne 2. For each pair of elements listed, predict which one has more stable isotopes. C) Ag or Cd b) For Se b) Co or Niarrow_forward30. A sample of element X contains 90% X-35, 8.0% X-37, and 2.0% X-38 atoms. The average atomic mass will be closest to which value? (А) 35 (В) 36 (C) 37 (D) 38arrow_forwardquestion 5 1. LDA/THF,-78 °C 2. D20 Draw the molecule on the canvas by choosing buttons from the Tools (for bonds), Atoms, and Advanced Template toolbars. The single bond is active elault change the isotopic form of an element, right-click the atom and select the Isotope. O, Q H CONT IS CI Br Marvin JS y ChemAxon O击 Submit Request Answer エ 0Z osarrow_forward
- The electrical charge on the nucleus (from just the protons) of 5928Ni2+ (it should read 59 over 28, Ni to the second power+) a) +28 b) +31 c) -28 d) -59 e) +59arrow_forwardBack Submit Answer References Use the References to access important values if needed for this question. A certain element consists of two stable isotopes. The first has a mass of 14.0 amu and a percent natural abundance of 99.6 %. The second has a mass of 15.0 amu and a percent natural abundance of 0.370 %. What is the atomic weight of the element? O. Atomic Weight: This is group attempt 2 of 10 Autosaved at 10:50 PM amuarrow_forward9: Which of the following is an alkali metal? B) Rb A) Zr C) Cs D) Te 10: The symbols for Potassium, Phosphorus, Magnesium and Manganese are: A) P, K, Mn, Mg C) P, K, Mg, Mn B) K, P, Mn, Mg D) K, P, Mg, Mnarrow_forward
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