Question

ionic naming

1. rubidium and iodine
2. barium and chlorine
3. lithium and selenium
4. magnesium and nitrogen
5. cs₂s
6. bao
7. ali₃
8. mno₂
9. cdbr₂
10. nacl
11. rubidium sulfide

Explanation:

Step1: Analyze Rubidium and Iodine

Rubidium (Rb) is an alkali metal with a +1 charge. Iodine (I) is a halogen with a -1 charge. To form a neutral compound, the ratio is 1:1.
So the formula is RbI, named Rubidium iodide.

Step2: Analyze Barium and Chlorine

Barium (Ba) is an alkaline earth metal with a +2 charge. Chlorine (Cl) has a -1 charge. To balance charges, we need 2 Cl⁻ for 1 Ba²⁺.
Formula: BaCl₂, named Barium chloride.

Step3: Analyze Lithium and Selenium

Lithium (Li) has a +1 charge. Selenium (Se) has a -2 charge (like oxygen family). So we need 2 Li⁺ for 1 Se²⁻.
Formula: Li₂Se, named Lithium selenide.

Step4: Analyze Magnesium and Nitrogen

Magnesium (Mg) has +2 charge. Nitrogen (N) has -3 charge. Find the least common multiple of 2 and 3, which is 6. So 3 Mg²⁺ (total +6) and 2 N³⁻ (total -6).
Formula: Mg₃N₂, named Magnesium nitride.

Step5: Analyze Cs₂S

Cesium (Cs) has +1 charge. Sulfur (S) has -2 charge. The formula Cs₂S means 2 Cs⁺ and 1 S²⁻ (2×(+1) + 1×(-2) = 0). Named Cesium sulfide.

Step6: Analyze BaO

Barium (Ba) +2, Oxygen (O) -2. 1:1 ratio. Named Barium oxide.

Step7: Analyze AlI₃ (note: "All₃" is likely a typo for AlI₃)

Aluminum (Al) has +3 charge. Iodine (I) -1. So 3 I⁻ for 1 Al³⁺. Named Aluminum iodide.

Step8: Analyze MnO₂

Manganese (Mn) in MnO₂: O is -2, so 2×(-2) = -4. Thus Mn has +4 charge. Named Manganese(IV) oxide (or Manganese dioxide).

Step9: Analyze CdBr₂

Cadmium (Cd) has +2 charge (common for Cd). Bromine (Br) -1. 2 Br⁻ for 1 Cd²⁺. Named Cadmium bromide.

Step10: Analyze NaCl

Sodium (Na) +1, Chlorine (Cl) -1. 1:1. Named Sodium chloride.

Step11: Analyze Rubidium sulfide

Rubidium (Rb) +1, Sulfide (S²⁻). So we need 2 Rb⁺ for 1 S²⁻. Formula: Rb₂S.

Answer:

1. Rubidium iodide (RbI)
2. Barium chloride (BaCl₂)
3. Lithium selenide (Li₂Se)
4. Magnesium nitride (Mg₃N₂)
5. Cesium sulfide
6. Barium oxide
7. Aluminum iodide (AlI₃)
8. Manganese(IV) oxide (MnO₂)
9. Cadmium bromide
10. Sodium chloride
11. Rubidium sulfide (Rb₂S)