(a) Write the formula for each of these compounds. (b) Tell...

Name: Problem 126, Chapter 3: Chemistry: The Molecular Science
Uploaded: 2021-08-11T15:23:08-08:00
Duration: 1 min 43 s
Channel: Lottie Adams
Description: (a) Write the formula for each of these compounds. (b) Tell which ones are best described as ionic. (i) Sodium hypochlorite (ii) Aluminum perchlorate (iii) Potassium permanganate (iv) Potassium dihydrogen phosphate (v) Chlorine trifluoride (vi) Boron tribromide (vii) Calcium acetate (viii) Sodium sulfite (ix) Disulfur tetrachloride (x) Phosphorus trifluoride

(a) Write the formula for each of these compounds. (b) Tell which ones are best described as ionic. (i) Sodium hypochlorite (ii) Aluminum perchlorate (iii) Potassium permanganate (iv) Potassium dihydrogen phosphate (v) Chlorine trifluoride (vi) Boron tribromide (vii) Calcium acetate (viii) Sodium sulfite (ix) Disulfur tetrachloride (x) Phosphorus trifluoride

(a) Write the formula for each of these compounds.
(b) Tell which ones are best described as ionic.
(i) Sodium hypochlorite
(ii) Aluminum perchlorate
(iii) Potassium permanganate
(iv) Potassium dihydrogen phosphate
(v) Chlorine trifluoride
(vi) Boron tribromide
(vii) Calcium acetate
(viii) Sodium sulfite
(ix) Disulfur tetrachloride
(x) Phosphorus trifluoride

Key Concepts

Chemical Formula Writing

This concept involves translating a compound's name to its chemical formula by identifying the constituent elements or polyatomic ions, determining their respective charges, and combining them in the correct ratios to ensure overall neutrality. It requires familiarity with periodic table symbols, common polyatomic ion formulas, and the use of subscripts to represent the number of atoms or ion groups in a compound.

Ionic vs Covalent Compounds

This concept distinguishes between compounds based on the type of bonding between atoms. Ionic compounds are formed from the transfer and electrostatic attraction between cations and anions, typically involving metals and nonmetals. In contrast, covalent compounds are characterized by the sharing of electrons between nonmetal atoms. Recognizing which compounds are best described as ionic involves considering the elements’ positions within the periodic table as well as the overall charge balance in the compound.

Polyatomic Ions and Nomenclature

This concept focuses on groups of atoms that behave as a single ion with a specific charge. Many compounds include polyatomic ions such as hypochlorite, perchlorate, permanganate, dihydrogen phosphate, acetate, and sulfite. Mastery of this topic requires knowing the standard formulas and charges for these ions, so they can be correctly incorporated into the overall chemical formulas for the compounds.

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