BYU Chemistry 41 Lesson 6 Self checks
Determine the percent ionic and percent covalent character of the bonds and calculate the bond lengths for each of the following questions. boron and carbon Boron-- atomic radius 85 pm, covalent radius 82 pm, ionic radius 41 pm Carbon -- atomic radius 77 pm, covalent radius 77 pm, ionic radius 260 pm
B 2.04, C 2.55; 0.51 = 6% ionic/94% covalent bond length = 82 + 77 = 159 pm
An ionic bond forms between which type of atoms?
a metal and a nonmetal
Would the bond formed between the following atoms be ionic or covalent? carbon and sulfur
covalent
Would the bond formed between the following atoms be ionic or covalent? nitrogen and iodine
covalent
Would the bond formed between the following atoms be ionic or covalent? sulfur and oxygen
covalent
In which type of bond are electrons shared?
covalent bond
Would the bond formed between the following atoms be ionic or covalent? calcium and chlorine
ionic
Would the bond formed between the following atoms be ionic or covalent? magnesium and oxygen
ionic
Would the bond formed between the following atoms be ionic or covalent? sodium and bromine
ionic
In which type of bond are electrons transferred from one atom to another?
ionic bond
A covalent bond forms between which type of atoms?
two nonmetal
Determine the percent ionic and percent covalent character of the bonds and calculate the bond lengths for each of the following questions. cesium and fluorine Cesium -- atomic radius 262 pm, covalent radius 235 pm, ionic radius 181 pm Fluorine -- atomic radius 69 pm, covalent radius 72 pm, ionic radius 119 pm
Cs 0.79, F 3.98; 3.10 = 92% ionic/8% covalent bond length = 181 + 119 = 300 pm
Determine the percent ionic and percent covalent character of the bonds and calculate the bond lengths for each of the following questions. fluorine and silicon Fluorine -- atomic radius 69 pm, covalent radius 72 pm, ionic radius 119 pm Silicon -- atomic radius 118 pm, covalent radius 111 pm, ionic radius 54 pm
F 3.98, Si 1.90; 2.08 = 63% ionic/37% covalent bond length = 119 + 54 = 173 pm
Determine the percent ionic and percent covalent character of the bonds and calculate the bond lengths for each of the following questions. hydrogen and chlorine Hydrogen -- atomic radius 78 pm, covalent radius 32 pm, ionic radius n/a Chlorine -- atomic radius 91 pm, covalent radius 99 pm, ionic radius 86 pm
H 2.2, Cl 3.16; 0.96 = 22% ionic/78% covalent bond length 32 + 99 = 131 pm
Determine the percent ionic and percent covalent character of the bonds and calculate the bond lengths for each of the following questions. magnesium and nitrogen Magnesiu -- atomic radius 160 pm, covalent radius 136 pm, ionic radius 86 pm Nitrogen -- atomic radius 71 pm, covalent radius 75 pm, ionic radius 132 pm
Mg 1.31, N 3.04; 1.73 = 51% ionic, 49% covalent bond length 86 +132 = 218 pm
