Question

use the prefixes to complete the names of the covalent compounds below: drag and drop p₄o₆ phosphorus ? oxide h₂s hydrogen ? sulfide sf₅ sulfur ? fluoride greek prefixes mono → 1 di → 2 tri → 3 tetra → 4 penta → 5 hexa → 6 hepta → 7 octa → 8 nona → 9 deca → 10 answer bank tetra mono penta di hexa tri

Explanation:

Step1: Analyze \( \text{H}_2\text{S} \)

For \( \text{H}_2\text{S} \), the subscript of H is 2. From Greek prefixes, "di" means 2. So the prefix for H is "di".

Step2: Analyze \( \text{P}_4\text{O}_6 \)

For \( \text{P}_4\text{O}_6 \), subscript of P is 4 ("tetra") and subscript of O is 6 ("hexa"). So prefixes are "tetra" (for P) and "hexa" (for O).

Step3: Analyze \( \text{SF}_5 \)

For \( \text{SF}_5 \), subscript of S is 1 ("mono") and subscript of F is 5 ("penta"). So prefixes are "mono" (for S) and "penta" (for F).

Answer:

• \( \text{H}_2\text{S} \): di (for hydrogen), mono (wait, no: H₂S is dihydrogen sulfide? Wait, correction: H₂S: hydrogen has subscript 2, so "di" for H. So hydrogen: di, sulfide: (no prefix for S? Wait, no, covalent naming: first element prefix (if >1), second element prefix. H₂S: hydrogen (2: di) + sulfide. So dihydrogen sulfide.
• \( \text{P}_4\text{O}_6 \): phosphorus (4: tetra) + oxide (6: hexa) → tetraphosphorus hexaoxide.
• \( \text{SF}_5 \): sulfur (1: mono) + fluoride (5: penta) → monosulfur pentafluoride (or sulfur pentafluoride, but with prefixes: mono for S, penta for F).

Filling the boxes:

• \( \text{H}_2\text{S} \): top box (hydrogen) → di; bottom box (sulfide) → mono? Wait, no, H₂S: H is 2 (di), S is 1 (mono? No, S is 1, so no prefix? Wait, covalent naming: first element: prefix if subscript >1, second element: prefix always. Wait, H₂S: hydrogen (2: di) + sulfide (1: mono? No, S is 1, so "mono" is used? Wait, no, common name is hydrogen sulfide, but with prefixes: dihydrogen monosulfide? Maybe. Let's follow subscripts:
• \( \text{H}_2\text{S} \): H: 2 → di; S: 1 → mono. So top (H): di, bottom (S): mono.
• \( \text{P}_4\text{O}_6 \): P: 4 → tetra; O: 6 → hexa. So top (P): tetra, bottom (O): hexa.
• \( \text{SF}_5 \): S: 1 → mono; F: 5 → penta. So top (S): mono, bottom (F): penta.

So the prefixes are:

• \( \text{H}_2\text{S} \): di (hydrogen), mono (sulfide)
• \( \text{P}_4\text{O}_6 \): tetra (phosphorus), hexa (oxide)
• \( \text{SF}_5 \): mono (sulfur), penta (fluoride)