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184. Select the element whose Lewis symbol is correct.

185. Select the correct formula for a compound formed from calcium and chlorine.

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186. Select the correct formula for a compound formed from barium and nitrogen.  

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187. Which of the following elements is the most electronegative?

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188. Which of the following elements is the least electronegative?

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189. Which of the following elements is the most electronegative?

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190. Arrange aluminum, nitrogen, phosphorus, and indium in order of increasing electronegativity

 

191. Which of the following period 3 chlorides would be expected to have the highest melting point?

 

192. Electronegativity is a measure of?

 

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Robert Kubara
Robert KubaraLv10
28 Jan 2021

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Related questions


1.
Which of the following is true of a cation?
A) it has equal numbers of protons and electrons
B) it has fewer protons than electrons
C) it has more protons than electrons
D) the relationship between protons and electrons depends on thespecific cation
2.
Which is most likely true for an atom with six valenceelectrons?
A) it will gain one electron
B) it will gain two electrons
C) it will lose one electron
D) it will lose two electrons
3.
Which is most likely true for an atom with one valenceelectron?
A) it will gain one electron
B) it will gain two electrons
C) it will lose one electron
D) it will lose two electrons
4.
Which of the following atoms is least likely to form an ion?
A) fluorine
B) magnesium
C) silicon
D) sodium
5.
For which of the following atoms do we not try to apply the octetrule?
A) oxygen
B) nickel
C) sodium
D) xenon
6.
Which of the following is likely to form an ion with the largestpositive charge?
A) potassium
B) calcium
C) aluminum
D) silicon
7.
Which of the following is likely to form an ion with the mostnegative charge?
A) aluminum
B) sulfur
C) chlorine
D) argon
8.
Which of the following ions has the same electronic configurationas neon?
A) Mg2+
B) F -
C) both (a) and (b)
D) neither (a) nor (b)
9.
What is the name of the species formed when a sodium atom loses anelectron?
A) sodate
B) sodide
C) sodium
D) sodium ion
10.
What is the name of the species formed when a bromine atom gains anelectron?
A) bromate
B) bromide
C) bromine
D) bromine ion
11.
Which of the following endings is generally associated with amonatomic anion?
A) ...ade
B) ...ate
C) ...ic
D) ...ide
12.
If the name of an ion ends in "ate" what type of ion is it mostlikely to be?
A) a monatomic anion
B) a monatomic cation
C) a polyatomic anion
D) a polyatomic cation
13.
The preferred name for HSO4- is hydrogen sulfate. What is thecommon name for this ion?
A) bisulfate
B) disulfate
C) bisulfide
D) disulfide
14.
Which pair of species is most likely to form an ionic bond?
A) two electrically neutral species
B) two electrically charged species, one positive and onenegative
C) two negatively charged species
D) two positively charged species
15.
Which of the following situations is most likely to result information of a covalent bond?
A) when an electrically positive species interacts with anelectrically negative species
B) when two nonmetallic elements interact to form a compound
C) when two electrically negative species interact
D) when two electrically positive species interact
16.
Which of the following statements is generally true aboutelectronegativity?
A) electronegativity decreases as we move left to right anddecreases as we move top to bottom
B) electronegativity decreases as we move left to right andincreases as we move top to bottom
C) electronegativity increases as we move left to right anddecreases as we move top to bottom
D) electronegativity increases as we move left to right andincreases as we move top to bottom
17.
For which of the following pairs are the atoms most likely to forman ionic bond with each other?
A) carbon and oxygen
B) calcium and chlorine
C) chlorine and oxygen
D) sodium and magnesium
18.
What is the formula of the compound formed by magnesium andiodine?
A) MgI
B) MgI2
C) MgI3
D) Mg2I
19.
What is the formula of the compound formed between the ammonium ionand the carbonate ion?
A) NH4CO3
B) NH4(CO3)2
C) (NH4)2CO3
D) (NH4)3CO3
20.
What is the formula of the compound formed between the magnesiumion and the acetate ion?
A) MgC2H3O2
B) Mg2C2H3O2
C) Mg(C2H3O2)2
D) Mg(C2H3O2)3
21.
What is the correct name for KI?
A) monopotassium monoiodide
B) potassium iodine
C) potassium iodide
D) potassium ion iodine ion
22.
A compound used to treat manic depressives has the formula Li2CO3.Which of the following is the correct name for this compound?
A) dilithium carbonate
B) lithium carbon trioxide
C) lithium carbonate
D) lithium carboxide
23.
Which of the following bonds is the most polar?
A) H__F
B) H__Cl
C) H__Br
D) H__I
24.
How many electrons are associated with a double bond?
A) 1
B) 2
C) 4
D) 6
25.
How many bonds does a carbon atom typically form?
A) 2
B) 4
C) 6
D) 8
26.
Laughing gas, sometimes called nitrous oxide, has the formula N2O.What is the proper chemical name for nitrous oxide?
A) nitrogen oxide
B) nitrogen dioxide
C) dinitrogen oxide
D) dinitrogen oxygen
27.
Which of the following is the correct formula for dinitrogenpentoxide?
A) O2N5
B) O5N2
C) N2O5
D) N5O2
28.
What is the proper chemical name for water?
A) dihydrogen oxide
B) dihydrogen oxygen
C) hydrogen oxide
D) hydrogen oxygen
29.
To use the VSEPR model to determine the geometry of a molecule weneed to know which of the following?
A) the number of atoms in the molecule
B) the number of atoms bonded to the central atom
C) the number of lone pairs around the central atom
D) both (b) and (c)
30.
What bond angle is most closely associated with a tetrahedraldistribution of electron density?
A) 90o
B) 109.5o
C) 120o
D) 180o
31.
What bond angle is most closely associated with a trigonal planardistribution of electron density?
A) 90o
B) 109.5o
C) 120o
D) 180o
32.
What bond angle is most closely associated with a lineardistribution of electron density?
A) 90o
B) 109.5o
C) 120o
D) 180o
33.
Which of the following molecules is best described as having anearly tetrahedral distribution of electron density?
A) BeCl2
B) OF2
C) SnCl2
D) none of these
34.
In which of the following molecules does the carbon atom have alinear distribution of electron density?
A) C2H2
B) C2H4
C) C2H6
D) none of these
35.
Which of the following is true for the molecule O=C=S?
A) it is nonpolar because it contains only double bonds
B) it is polar because the polarities of the O=C and C=S do notcancel
C) it is polar because it has a bent shape
D) it is nonpolar because it is linear

T A

s

0 0.481

1 0.476

2 0.471

3 0.466

4 0.460

5 0.454

6 0.449

7 0.445

8 0.440

9 0.435

10 0.430

11 0.425

12 0.420

13 0.415

14 0.411

15 0.408

16 0.403

17 0.399

18 0.394

19 0.390

20 0.385

21 0.380

22 0.375

23 0.372

24 0.367

25 0.362

26 0.359

27 0.357

28 0.355

29 0.348

30 0.343

31 0.339

32 0.335

33 0.332

34 0.328

35 0.324

36 0.321

37 0.317

38 0.314

39 0.311

40 0.307

41 0.304

42 0.301

43 0.297

44 0.295

45 0.293

46 0.289

47 0.285

48 0.283

49 0.280

50 0.277

51 0.274

52 0.272

53 0.270

54 0.267

55 0.264

56 0.261

57 0.259

58 0.257

59 0.254

60 0.251

61 0.248

62 0.246

63 0.244

64 0.241

65 0.240

66 0.240

67 0.239

68 0.233

69 0.228

70 0.225

71 0.223

72 0.221

73 0.220

74 0.218

75 0.219

76 0.216

77 0.211

78 0.208

79 0.206

80 0.205

81 0.203

82 0.200

83 0.198

84 0.197

85 0.194

86 0.192

87 0.190

88 0.188

89 0.186

90 0.184

91 0.182

92 0.180

93 0.178

94 0.177

95 0.174

96 0.173

97 0.171

98 0.170

99 0.168

100 0.167

101 0.165

102 0.163

103 0.162

104 0.159

105 0.158

106 0.156

107 0.155

108 0.153

109 0.151

110 0.149

111 0.149

112 0.147

113 0.146

114 0.144

115 0.143

116 0.141

117 0.140

118 0.138

119 0.137

120 0.136

121 0.135

122 0.134

123 0.132

124 0.131

125 0.130

126 0.128

127 0.126

128 0.125

129 0.125

130 0.123

131 0.122

132 0.121

133 0.120

134 0.119

135 0.118

136 0.117

137 0.116

138 0.115

139 0.114

140 0.114

141 0.114

142 0.111

143 0.110

144 0.109

145 0.108

146 0.107

147 0.106

148 0.105

149 0.105

150 0.104

151 0.103

152 0.103

153 0.102

154 0.100

155 0.100

156 0.099

157 0.099

158 0.098

159 0.097

160 0.096

161 0.096

162 0.095

163 0.094

164 0.094

165 0.093

166 0.092

167 0.092

168 0.091

169 0.090

170 0.090

171 0.089

172 0.088

173 0.087

174 0.087

175 0.086

176 0.085

177 0.085

178 0.084

179 0.084

180 0.084

181 0.083

182 0.082

183 0.081

184 0.076

185 0.055

186 0.053

187 0.053

188 0.052

189 0.052

190 0.051

191 0.052

192 0.053

193 0.051

194 0.049

195 0.049

196 0.049

197 0.048

198 0.047

199 0.047

200 0.047

Using excel, analyze the data graphically to decide if the reaction is zero, first or second order with respect to crystal violet.

1. was the reaction zero, first or second order, with respect to the concetration of crystal violet? Explain

2. Calculate the rate, K, using the slope of the linear regression line for your linear curve (k= --slope for zero and first order and K= slope for second order.) Be sure to include correct units for the rate constant

3. Write the correct rate law expression for the reaction, in terms of crystal violet (Omit OH-)

4. Using the data table, estimate the half-life of the reaction; select two points, one with an absorbance value that is about half of the other absorbance value. The time it takes the absorbance (or concentration) to be halved is known as the half life for the reaction

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