18. Which statement explains why ionic compound has high melting point? B A Covalent bond between atoms is strong B Electrostatic force between ions is strong C There are free moving ions in the compound D More energy is needed to overcome the force between molecules 相关知识点: 试题来源:...
Acovalent compound Bchemical formula Cmolecular formula Dempirical formulaSubmit Formula which represents a simple ratio of atoms of different element present in a molecule of the substance is called AMolecular formula BEmpirical formula CStructural formula DNone of theseSubmit Assertion: Molecular form...
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What feature in its structural formula indicates whether a hydrocarbon is an alkane, alkene, alkyne, or aromatic compound? An alkyne's name ends in: a. -ane b. -ene c. -yne d. -diene Which condensed structural formula represents an unsaturated compound? a)...
Which compound has the lowest boiling point? Which type of bonds (ionic, polar covalent, or nonpolar covalent) are in each of the following? a. LiCl b. CH4 c. H2O Which of the following compounds would you expect to exhibit covalent bonding? a. ClF3 b. VF5...
The disulfide compound which is displayed with formula C by covalent binding (the inside n of type C is integer 1 - 20 on the metalPROBLEM TO BE SOLVED: To provide a photoenergy transferable element obtained by forming a self- organized monomolecular film composed of a mixture of an energy ...
Combining our observations, the study suggests that in the USA, established adulthood, while often associated with career stability and growth, can also involve a period of career reevaluation for some individuals.Pueraria montana var., coupled with Salvia miltiorrhiza Bunge, represents a significant ...
The carbonate ion (CO32−) has three resonance structures that can be drawn. Each resonance structure represents a different... Learn more about this topic: Orbital Hybridization: Double & Triple Bond | Rules & Formula from Chapter 14/ Lesson 5 ...
1. A compound of formula I wherein X is L1; L1 is (CR3aR3b)rH or (CR3aR3b)m—Z3—(CR3′aR3′b)nH; Z1 is CH; Z3 is O, NR4, S, SO, or SO2; m is 0 or 1; n is 2 or 3, and n+m=2 or 3; r is 2, 3 or 4; R1a and R1b are independently alkyl, substituted...
Suitable furans include those of formula (Structure IV in the Appendix) wherein R3 represents hydrogen or an alkyl group and R4 represents a functional group linking to a polymer chain. Preferably R3 represents hydrogen or a methyl group. Preferred furans within formula (Structure IV in the Appen...