Interpretation:
The compound having higher melting point between
Concept Introduction:
Coulomb’s law:
It states that the magnitude of the electrostatic force between two point charges is directly proportional to the product of the magnitudes of the charges and inversely proportional to the square of the distance between them.
Where,
Periodic trend of size:
Atomic radius decreases from left to right within a period. This is due to the increase in the number of protons and electrons across a period. One proton has a greater effect than one electron; thus, electrons are pulled towards the nucleus, resulting in a smaller radius and smaller size. Atomic radius increases from top to bottom within a group. This is due to electron shielding.
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Chemistry: The Molecular Science
- Consider these ionic compounds: KCl, CaS, CaO, SrSe, and LiF. Without looking up any values, predict the order of melting points from lowest to highest. Explain the reasons for your predictions.arrow_forward7. Which of these two compounds will have a higher melting point? Explain your choice. KF and CaF;arrow_forwardThe melting point of TiCl4 (-24°C) lies below those ofTiF4 (284°C) and TiBr4 (38°C). Explain why by considering the covalent-ionic nature of these compounds and theintermolecular forces in each case.arrow_forward
- ● Explain why higher average kinetic energy results in higher vapor pressure in terms of IMFs.arrow_forwardDefine the term crystalline lattice?arrow_forwardIn terms of intermolecular forces, explain why the boiling point of Br2(59°C) is lower than that of iodine monochloride ICl (97°C), even though they have nearly the same molar mass.arrow_forward
- For each of the following pairs of substances, predict which member of the pair will have the higher melting point, and indicate why.arrow_forwardDistinguish sodium chloride structure and diamond structure. Provide an illustration to support your explanationarrow_forwardThe student finds the following particulate model of AgCl(s). Assuming the crystal structures are similar, how should the student modify the model to represent CuCl(s)? Justify your answer in terms of the radius and arrangement of electrons in the ions.arrow_forward
- Which compound will be more likely to exist as a hydrated solid? O KCl CuSO4arrow_forwardConsider the following materials: 1) liquid methane (CH4) 2) liquid water (H2O), 3) solid sodium fluoride (NaF) and 4) liquid solution of NaF in water. Describe the types of forces which hold the ions and/or molecules together in each of these materials.arrow_forwardChoose the compound that has the lowest surface tension. (Consider intermolecular forces) Не Tete Li Be B Ne 12 14 15 16 17 Na Mg Al Si ci Ar 19 20 21 22 23 24 26 27 28 29 31 33 34 35 36 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr 47 64 41 Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te Хе ST-70 71 72 74 76 77 Cs Ba Lu Hf Ta W Re Os Ir Pt Au Hg TI Pb Bi Po At Rn STAL 3-102 103 104 185 106 187 108 110 111 112 114 Fr Ra Lr Rf Db Sg Bh Hs Mt Uun Uuu Uub Uuq 70 *Lanthanide series La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb **Actinide series 100 101 102 Ac Th Pa Np Pu Am Cm Bk Cf Es Fm Md No Select one: O a. HOCH;CH;OH OB CH;CH2CH2NH2 Oc CH;COOH Od CH;CH2CH2OHarrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningGeneral Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage LearningChemistry: Matter and ChangeChemistryISBN:9780078746376Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl WistromPublisher:Glencoe/McGraw-Hill School Pub Co