What is the formula and name of the compound formed between Mg and P? Select one: Mg3P2; Tri Magnesium Di Phosphide Mg3P2: Magnesium Phosphide Mg3P2; Magnesium (II) Phosphide Mg3P2; Magnesium Phosphide Find the covalent compound from the given choices LiC K2S H2S Rb2S Balance the following equation by filling the gaps with appropriate numbers: NaNO2 + INa + O2
The Correct Answer and Explanation is:
Correct Answers:
- Formula and Name of the Compound Formed Between Mg and P:
Answer: Mg₃P₂; Magnesium Phosphide - Covalent Compound from the Given Choices:
Answer: H₂S - Balanced Equation:
Balanced: 2 NaNO₂ + 2 INa + O₂ → 2 NaIO₂ + N₂
Explanation
1. Naming the Compound Mg₃P₂:
The compound formed between magnesium (Mg) and phosphorus (P) is Mg₃P₂, and its correct name is Magnesium Phosphide. Magnesium is a metal that forms a +2 cation (Mg²⁺), and phosphorus is a nonmetal that forms a -3 anion (P³⁻). To balance the charges, we need three Mg²⁺ ions for every two P³⁻ ions, resulting in the neutral formula Mg₃P₂. The name does not require Roman numerals or prefixes because it is an ionic compound with a metal of fixed charge.
2. Identifying the Covalent Compound:
Out of the compounds given: LiC, K₂S, H₂S, and Rb₂S, only H₂S (Hydrogen Sulfide) is a covalent compound. Covalent compounds typically form between nonmetals. Hydrogen and sulfur are both nonmetals, so they share electrons to form covalent bonds. The others (LiC, K₂S, Rb₂S) all contain a metal and a nonmetal, forming ionic compounds through electron transfer rather than sharing.
3. Balancing the Reaction:
The unbalanced reaction is:
NaNO₂ + INa + O₂ → NaIO₂ + N₂
To balance the atoms:
- Start with the nitrogen atoms. Since NaNO₂ has one nitrogen, and N₂ is diatomic, we need two NaNO₂ molecules to produce one N₂ molecule.
- Match the number of iodine and sodium atoms. We see two INa on the left and two NaIO₂ on the right.
- Add up the oxygens and adjust O₂ as needed.
Balanced:
2 NaNO₂ + 2 INa + O₂ → 2 NaIO₂ + N₂
This ensures conservation of mass and atoms for each element across the equation.
