M5 Exam

Chemistry: Form WS2.3.3B Name ATOMS Date Period Électroi Dot Diagrams, Étc. Electron dot diagrams are a useful way to show the arrangement of outer electrons of an atom. They show valence electrons as dots at 12 o'clock, 3 o'clock, 6 o'clock, and 9 o'clock, and the rest of the atom, known as the kernel, as a symbol. It is useful to think of the outer shell as if it contained two apartments, one with one bedroom and the other with three bedrooms. Each bedroom has space for two occupants. Think of electrons as frugal little fellows who do not like to share. Electrons will prefer to move into the cheaper, one bedroom apartment if it is available even if it means sharing a room with another electron. If the cheap apartment is not available, they'll settle for the three bedroom apartment, but they won't share a bedroom until the apartment becomes too crowded to have a choice. As a result, the first space gets two electrons before any of the other spaces get electrons. The next three spaces…

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What is the Ksp expression for the ionic compound Li2CO3? A. Ksp = [Li+][CO32-]B. Ksp = [Li+]2[CO32-]C. Ksp = 2[Li+][CO32-]D. Ksp = [Li2CO3]3E. None of the above

Salt Formation & Formulas K(s) + Br₂ (8) K (s) Li (s) F2 (g) + F₂ + N₂ (8) Ca + Cl₂ (8) (s) Na 02 (8) (s) + Al (s) + Cl₂ (g) → potassium bromide potassium fluoride lithium nitride calcium chloride sodium oxide aluminum chloride 2 3 4 5 6 7 ΤΑ Using what you know about predicting ion charge, ionic bonding, and the criss-cross technique, write neutral salt product formulas for these synthesis equations. 2A 2 A ú Be 6.94 90122 12 Na Mg 22990 24.305 K C 34 39.00 40.078 44.956 37 87 Fr G B₁ 13291 137.33 charge 3B 4B 5B 6B 7B 8B 9B 10B IIB 12B 3 10 11 12 H (223) (236) 36 53-71 72 73 Hr Ta 74 178.49 180.95 183.84 88 99-103 104 105 P₂ Ra Rf Db Lanthanide series #Actinide series group A num 11 V 47367 50.942 51.996 54.938 43 & Nb Mo Tc Ru Rh Pd Ag Cd CSSE 85.468 87.62 88.906 91.224 92.906 95.95 (9) 75 191.07 102.91 106.42 10787 11241 114.82 118.71 121.76 127 60 17 78 10 81 14 Os Ir P A H₂ 186.21 190.23 192.22 195.08 196.97 20039 204.38 108 109 110 III 112 113 Bh Hs Mt Ds Ca Nh (270) Pb N Pa At…

The red color of rubies is the result of a substitution of some Cr³™ ions for Al3+ ions in solid Al203. a. Using noble gas notation, write the electron configuration for the Chromium atom and the Cr3+ ion. 3+ b. is the Crt ion para- or diamagnetic? Would it be attracted a magnetic field? c. Compare the radius of the Cr" ion to a neutral Cr atom; which would have a larger radius? Explain your answer in at least one sentence that mentions effective nuclear charge.

(11) Try Again Your answer is incorrect. • BP: The name of this compound is not "boron phosphide". Be sure you know the correct names of all elements in this compound. Check the Periodic Table if necessary. • C3S2: Your answer is incorrect. Fill in the systematic names of the following chemical compounds. Note: for compounds containing hydrogen, you may give the common name instead. molecular formula BP C₂S₂ CS₂ BI₂ H₂O Explanation Recheck name of compound boron phosphide carbon subsulfide carbon disulphide boron triiodide water X Ś olo Ar

Using the periodic table as a guide, predict the chemical formula and name of the compound formed by the following elements: Ga and F  Li and H K and S Ca and Br K and CO32- NH4 and SO42- Mg and NO3 -1 Fe and OH-1   Give reasoning of the following questions:   a) A compound has formula CaX2. If anion of X has 18 electrons, what element is X? Which family does it belong to?       b) A compound has formula X3N2. Which group does X belong to? What is the charge on the ion of X?     c) A compound has formula X(NO3)3. If the cation of X has 12 electrons, what element is X?   Name the following compounds: LiNO3 Sc2O3 NF3 Ag2SO4 PF5 NaI SCl2 Ca(NO3)2 FeCl3 N2O4 HClO4 (aq) Na3P Write the chemical formulas for the following compounds aluminum hydroxide potassium sulfate copper (I) oxide zinc nitrate mercury (II) bromide iron (III) carbonate sodium phosphate cobalt (II) nitrate copper (II) perchlorate bromic acid dichloroheptaoxide chromium (III) nitride sulfuric acid lead(IV)…

Using the periodic table as a guide, predict the chemical formula and name of the compound formed by the following elements: Ga and F  Li and H K and S Ca and Br K and CO32- NH4 and SO42- Mg and NO3 -1 Fe and OH-1   Give reasoning of the following questions:   a) A compound has formula CaX2. If anion of X has 18 electrons, what element is X? Which family does it belong to?       b) A compound has formula X3N2. Which group does X belong to? What is the charge on the ion of X?     c) A compound has formula X(NO3)3. If the cation of X has 12 electrons, what element is X?   Name the following compounds: LiNO3 Sc2O3 NF3 Ag2SO4 PF5 NaI SCl2 Ca(NO3)2 FeCl3 N2O4 HClO4 (aq) Na3P

Q13 In the formation of a compound A2B3, two atoms of A lose three electrons each while three atoms of B gain two electrons each. Which of the following statements is incorrect regarding compound A2B3? A2B3 will be insoluble in organic solvents but soluble in water 0 High temperatures are to be supplied to cause melting and boiling of A2B3 A2B2 will have an ordered arrangement of its constituent species A2B3 will conduct electricity in the solid- 0 state, molten state as well as in an aqueous solution.

I just want to understand why the charge on bromine is 1 positive. Wouldn't it be +3 because 7-(2+2)?

type it

Re-order each list in the table below, if necessary, so that the atoms or ions in it are listed in order of decreasing size. atoms or ions Br, Br, Cl S, P, Na Cl, Ar, Cl atoms or ions in order of decreasing size 0,0,0 0,0,0 0.0.0 ㅁ X 5

esc →> Docun X 77°F Mostly cloudy ? W 2 Argum X https://app.101edu.co 3+ Use Coulomb's law to calculate the energy in aJ of the following ions to their equilibrium ion-pair separation distance: Fe³+ with radius 55 pm and P3 with a radius of 212 pm. # Life: Th X 13 * 3 f4 $ 101 223.pd X M MyOpe X 4 f5 % Q 5 D21 Home X Feedbe X Archive | Login A1 f6 Question 6 of 35 6 E hp & 7 18 * 00 19 D W 1 4 ho

1-An atomic cation with a charge of +2 has the following electron configuration: [He] 2s22p4 What is the chemical symbol for the ion?   How many electrons does the ion have?   How many 2s electrons are in the ion?       2-   Ammonium perchlorate (NH4ClO4) is powerful solid rocket fuel, used in the Space Shuttle boosters. It decomposes into nitrogen (N2) gas, chlorine (Cl2) gas, oxygen (O2) gas, and water vapor, releasing a great deal of energy. Calculate the moles of chlorine produced by the reaction of 0.90mol of ammonium perchlorate. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits. _____________ 3-How many protons and neutrons are in an atom of Th-229 ? Number of protons= ________ Number of neutrons= _______       4-  The chemical formula for beryllium sulfide is BeS. A chemist determined by measurements that 0.055 moles of beryllium sulfide…

How many p electrons does Sn2+ have in its outer shell?Select one:2 4 1 3 0

Look at the following graph. Explain what trend you are observing and how it relates to atomic radius and 1st ionization energy. (How does ionization energy and atomic radius impact electronegativity?)

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Which of the following ions has the largest radius?      Br-     S2-     B3+     Mg2+     Li+

Re-order each list in the table below, if necessary, so that the atoms or ions in it are listed in order of decreasing size. atoms or ions Al, C1, S Br, Br, Cl Cl, Ar, Cl atoms or ions in order of decreasing size 0.0.0 0.0.0 0,0,0 X Ś olo 18 Ar

Determine the total number of valence electrons for each Part A BF3 Express your answer as an integer. ΑΣΦ ? Submit Previous Answers Request Answer X Incorrect; Try Again; 3 attempts remaining

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The following two structures show the electron arrangements for two ions, N3 and NO₂. -N=Ö =N :0 Indicate whether their shapes are closest to the shape caused by 2, 3, or 4 balloons. Using sticky notes, put a nitrogen note at the center of the balloon shape as shown. N :0 N Answer Bank N

Good morning, can you please check if I have the correct metals? Please see attachment for question.

Re-order each list in the table below, if necessary, so that the atoms or ions in it are listed in order of decreasing size. atoms or ions + Mg, Mg, Na F, C1, C1 Kr, Br, Br atoms or ions in order of decreasing size 0.0.0 0,0,0 0.0.0 X Ś

Solve: The average atomic mass for J = 65.96 amu 65.96 = 63.9296 ×6.744  +  65.9449 × 90.654  +   67.9113 × M +     66.9154 × (100− (M+6.744+90.654))/100 65.96 = 431.1412 + 5978.169 + 67.9113 M + 66.9154 × (2.602−M)/100 6596 =  MM= The abundance of J−68 is  The abundance of J−67 is