CHMA10H3 Chapter Notes - Chapter 10: Photoemission Spectroscopy, Chemical Formula, Beryllium Chloride

Part A Constants | Periodic Table Learning Goal: To use electronegativity or metal versus nonmetal classifications to distinguish covalent, polar covalent, and ionic bonds. Consider the following element combinations. Classify the bonds formed between each pair as ionic, polar covalent, or nonpolar covalent based solely on each element's position on the periodic table. Drag the appropriate items to their respective bins. » Viow Available Hint(s) Reset Help When two bonded atoms attract electrons with equal strength, the result is a nonpolar covalent bond. A polar covalent bond is one in which the electrons are unequally shared between the atoms. An ionic bond results when the sharing is so unequal that fully charged ions form. OOOOOOOO Electronegativity difference can be used to predict bond type. One method to classify bonds based on this difference can be described as follows. If the electronegativities differ by less than 0.4 units, the bond can be classified as nonpolar covalent. If the difference is between 0.4 and 2.0 units, the bond is classified as polar covalent, and if the difference is more than 2.0 units, the bond is substantially ionic. Ionic Polar covalent Nonpolar covalent If you are not given electronegativity values, you can still predict the bond type using the periodic table. Metals have low electronegativity compared to nonmetals. So in general, we can predict that any metal-nonmetal combination will be ionic and any nonmetal-nonmetal combination will be covalent. If electronegativity values aren't given, you should assume that a covalent bond is polar unless it is between two atoms of the same element. Cuca Mg-N Ca-0 pa # PP FE s.81

Masteringchemistry Chaptery-hemical Bonding Lewis Theory- Gocgle Chrome 을 Secure ! https://session.masteringchemistry mView?offset-neyt&a 89499782 Covalent, Polar Covalent, and lonic Bonds Resources 《 previous | 80 1 Covalent, Polar Covalent, and lonic Bonds Part A Leaming Goal: Consider the following element combinations. Classify the bonds formed between each pair s ionic, polar covalent, or nonpolar covalent qualitatively based solely on each element's pasition on the periadic table Do not conduct calculations Drag the appropriate items to their respective bins. トHints To use electronegativity or metal versus nonmetal classifications to distinguish covalent, polar covalent, and ionic bonds When two bondod atoms attract electrons with equal strength, thec resull is a nonpolar covalet bond. A polacovalel bond is one in which the electrons are unequally shared between the atoms. An ionic hond resuits when the sharing is so unequal that fully charged ions form Eleclronegaivily difference an be used lo predict bond type. If electronegativities differ by more than 2 units, the bond is substantially ionic; if they difter by less than 2 units, the hond is polar covalent; and if the valucs arc cqual, the bond is nonpolar covalent. If you are ol given electronegativity values, you cari still predict the bond type using the perodic tabla. Metals havelow electronegativity compared to nonmetals So in general, we can predict that any metal- nonmctal combinaticn wil bc ionic and any nonmctal nonmetal combination wil be covalent. I「electronegativity values aren't given. you should assume that a covalent bond is polar unless it is behveen two atcoms of the same element Reset Help s and Br Cs and Cl B「and Br Ba and O O and Br P and i Mg and N P and F onic Polar covalent Submit My Answers Give Up Part B

8 which of the following solids would have the highest melting point? ( 1) KI (2) KBr (3) KCI (4) KF 9. What type of chemical bond holds the atoms together within a water molecule? (1) polar ionic bond(3) non polar covalent bond (4) coordinate covalent bond 10. Which of the following covalent bonds is the most polar (i.e., highest percent ionic character)? (1) A -CI (2) Si- (3)Al- (4) SI-Ci 11. The total number of valence electrons in the ion SO is (1)32 (2)28 (3)30 (4) 26 12. The Lewis structure reveals a double bond in which of the following molecules? (1)N (2) Br (3) CS: (4) CaHe 13. The Lewis structure reveals an unpaired electron (free radical) in which of the following species? () NO (2)N:O (3) NO (4) NO 14. The number of lone electron pairs in the CIO ion is (1) 12 (2)16 (3)4 (4)0 15. The formal charge on the bromine atom in BrOs drawn with three single bonds is (1)*2 16. Which of the elements listed below would most likely form a polar covalent bond when bonded to sulfur? 17. Give the number of lone pairs around the central atom and the molecular geometry of SeF(1)0 lone 18. According to Molecular Orbital Theory, two separate 1s orbitals interact to form what molecular orbital(l)? 19. The Lewis dot symbol for the S-ion is (2)-1 (1) K (2) Mg (3)C (4)o pairs, tetrahedral (2) 1 lone pair, square pyramidal (3) 1 lone pair, tetrahedral (4) 1 lone pair, distorted tetrahedron (seesaw) (1)oonly (2) π only (3) π and π. (4) σ and σ. 2- 20. Which of the following molecules has polar bonds but is a nonpolar molecule? (1) CO (2) Cla 21. Use VSEPR theory to predict the geometry of the SFe molecule. (1) trigonal bipyramidal (2) bent 22. The geometry of the hybrid orbitals about a central atom with sp hybridization is (1) linear (2) bent 23. Which of the following molecules have the same geometries? (1) CO2 and BeHa (2) SFa and CHe 24. According to the VSEPR theory, which one of the following species is linear? (1)HaS (2) SO2 25. Which of the following substances will display an incomplete octet in its Lewis structure? (1) CO2 26. Predict the geometry and polarity of the CS2 molecule. (1) linear, polar (2) linear, nonpolar (3) SO (4) HBr (3) trigonal planar (4) octahedral (3) trigonal planar(4) tetrahedral (3) CO2 and NO2 (4) N2O and NO2 (3) BFs (4) BeF2 (2) NO (3) Cl2 (4) BrCI (3) bent, nonpolar (4) bent, polar