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Unformatted text preview: uld be needed to span 1.0 cm? How many protons, neutrons and electrons are in each of the following (a)55Mn (b)40Ar (c) 65
Zn2+(d)79Se2‐ (e)184W (f)235U The following nuclides are used in medicine. Indicate how many protons and neutrons there are in each. (a)phosphorous‐32(b)chromium‐51 (c) cobalt‐60 (d) technetium‐99 (e)iodine‐131 (f) thallium‐201 Fill in all the gaps in the table assuming all the atoms are neutral 39
K Symbol Protons 25 82 Neutrons 30 64 Electron 48 56 Mass # 137 207 Fill in the gaps of the table 52 3+
Cr I Symbol Protons 47 33 Neutrons 60 69 42 Electron 46 48 Net Charge 2+ 3‐ Write the symbol for each of the following elements and indicate whether it is a metal, metalloid, or nonmetal. (a)silver (b)helium (c) phosphorous(d) aluminum (e) cadmium (f)calcium (g) bromine (h) arsenic How manyhydrogen atoms are there in the following? (a) C2H5OH (b) Ca(C2H3COO)2 (c)(NH4)2HPO4 57. Write the empirical formula to each of the follow molecular formulas. (a) S4N4 (b) C7H14 (c) C6H10O2(d)P4O6 (e) C6H10F8 (f)Si3O9 58. Each of the following elements can form an ion in a chemical reaction. By referring to the periodic table or other references, predict the charge of the most stable ion of each. (a) Al (b) ca (c) S (d) I (e) Cs 59. Using available references, predict the formula and the name of the compound formed by the following pairs of elements. (a) Ga and F (b) Li and H (c) Al and I (d) K and S 60. The most common charge associated with silver in its compound is +1. Indicate the formulas you would expect for compounds formed between Ag and (a) iodine (b) sulfur (c) fluorine 61. Hydrogen can have oxidation states of +1, 0 and ‐1. Write the formula and names of for one chemical species for each of these oxidation states. 62. Predict the formulas for compounds formed from the following ions: (a) Ca2+ and Br‐ (b) NH4‐ and Cl‐ (c) Al3+ and C2H3O2‐ (d) K+ and SO42‐ (e) Mg2+ and PO43‐ 63. Predict whether each of the following compounds is molecular or ionic (a)B2H6 (b)CH3OH (c)LiNO3 (d)Sc2O3 (e)CsBr (f)NOCl (g)NF3 (h)Ag2SO4 64. Give the chemical formula for (a)chloride ion(b) chlorite ion(c) chlorate (d)perchlorate ion (e)hypochlorite ion 65. Selenium, an element required nutritionally in very small amounts, forms compounds and ions analogous to those of sulfur (note: there proximity in the periodic table). Name the following ions. (a)SeO42‐(b) Se2‐(c) HSe‐ (d) HSeO3‐ 66. Name the following ionic compounds. (a)AlF3 (b)Fe(OH)2 (c)Cu(NO2)2 (d)Ba(ClO4)2 (e) Li3PO4 (f) Hg2S (g)Ca(C2H3O2)2 (h)Cr2(CO3)3 (i)K2CrO4 (j) (NH4)2SO4 (k)SrSO4 (l)ZnHPO4 (m)SnI2 67. Write the chemical formulas for the following compounds. (a)copper(I)oxide (b) potassium peroxide (c)aluminum hydroxide (d) zinc nitrate (e) mercury(I)bromide (f)iron(III) carbonate (g) sodium hypobromite (h) magnesium nitride (i) potassium hypochlorite (j) iron(II)sulfite 68. Provide the names or chemical formula, as appropriate, for each of the following acids. (a)sulfurous acid (b) HBr (c) hypochlorous acid (d) iodic acid (e)HBrO3 (I) H2CO3 (f) HC2H3O2 (g)nitrous acid (h)hydrocyanic acid 69. Provide the name or chemical formula appropriate, for e...
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- Fall '13
- AP Chemistry