CHM 130LL Experiment 10 Name: Class number PRE-LAB QUESTIONS Explain the differe

Question

CHM 130LL Experiment 10 Name: Class number PRE-LAB QUESTIONS Explain the difference between a nonpolar covalent bond, a polar covalent bond, and an ionic bond. 1. 2. From its position in the periodic table, determine which atom in each pair is more electronegative (a) N or O (b) S or O (c) S or P (d) N or Si (e) Ba or P 3. Distinguish the difference physical properties of ionic and covalent compounds. a) Are ionic compounds or covalent compounds usually soluble in water? Explain. b) Do ionic compounds or covalent compounds have a high melting point? Explain. 4. Define the term Extraction.

Explanation / Answer

1. Answer:Covalent bonding is the sharing of valence electrons between atoms.Valence electrons are shared by both the atoms forming bond.It may be polar or non polar. In Nonpolar covalent bonds two atoms equally share a pair of electrons with each other where as in Polar covalent bonds a pair of electrons is unequally shared between two atoms.

Ionic bonding is the type of chemical bond which involves complete transfer of valence electron(s) between atoms. It generates two oppositely charged ions, the metal loses electrons to become a positively charged cation, whereas the nonmetal accepts those electrons to become a negatively charged anion.

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