Question

1. name each of the following molecular compounds: (a) cf₄ (b) ph₃ (c) p₄o₁₀ (d) pcl₃ (e) n₂f₄ (f) o₂f₂ 3. copy the following list of compounds in your notebook. identify each compound as ionic or molecular. mark the binary compounds with an asterisk (*). name each compound using the appropriate method. (a) p₂o₅ (b) caso₄ (c) kno₃ (d) mgi₂ 4. write the formula for each of the following compounds: (a) phosphorus pentachloride (b) sulfur hexafluoride (c) nitrogen trifluoride (d) silicon tetrafluoride (e) silver phosphate (f) manganese(ii) dichromate (g) sodium perchlorate (h) cobalt(ii) permanganate 5. write the systematic name for each of the following substances: (a) water, h₂o (b) ammonia, nh₃ (c) potash, k₂co₃ (d) lye, naoh 6. thinking critically explain why a standard naming system is important for international communication, safety, and efficiency.

Explanation:

Step1: Name molecular compounds in 2

Use prefixes for number of atoms.
(a) Carbon tetrafluoride
(b) Phosphine
(c) Tetraphosphorus decoxide
(d) Phosphorus trichloride
(e) Dinitrogen tetrafluoride
(f) Dioxygen difluoride

Step2: Classify and name compounds in 3

(a) $P_2O_5$ - Molecular, diphosphorus pentoxide
(b) $CaSO_4$ - Ionic, calcium sulfate
(c) $KNO_3$ - Ionic, potassium nitrate
(d) $MgI_2$ - Ionic, magnesium iodide

Step3: Write formulas in 4

(a) $PCl_5$
(b) $SF_6$
(c) $NF_3$
(d) $SiF_4$
(e) $Ag_3PO_4$
(f) $Mn_2(Cr_2O_7)_2$
(g) $NaClO_4$
(h) $Co(MnO_4)_2$

Step4: Write systematic names in 5

(a) Dihydrogen monoxide
(b) Nitrogen trihydride
(c) Potassium carbonate
(d) Sodium hydroxide

Step5: Answer 6

A standard naming system is important for international communication as it ensures everyone uses the same names for substances, preventing misunderstandings. For safety, clear - named substances help in handling, storage, and emergency response. For efficiency, it streamlines research, manufacturing, and other processes by having a unified naming convention.

Answer:

1. (a) Carbon tetrafluoride

(b) Phosphine
(c) Tetraphosphorus decoxide
(d) Phosphorus trichloride
(e) Dinitrogen tetrafluoride
(f) Dioxygen difluoride

1. (a) Molecular, diphosphorus pentoxide

(b) Ionic, calcium sulfate
(c) Ionic, potassium nitrate
(d) Ionic, magnesium iodide

1. (a) $PCl_5$

(b) $SF_6$
(c) $NF_3$
(d) $SiF_4$
(e) $Ag_3PO_4$
(f) $Mn_2(Cr_2O_7)_2$
(g) $NaClO_4$
(h) $Co(MnO_4)_2$

1. (a) Dihydrogen monoxide

(b) Nitrogen trihydride
(c) Potassium carbonate
(d) Sodium hydroxide

1. A standard naming system is important for international communication as it ensures everyone uses the same names for substances, preventing misunderstandings. For safety, clear - named substances help in handling, storage, and emergency response. For efficiency, it streamlines research, manufacturing, and other processes by having a unified naming convention.