23. what is the formula of the compound aluminum phosphide?

a) alp

b) alp2

c) alp4

d) al3p3

Question

23. what is the formula of the compound aluminum phosphide?

a) alp

b) alp2

c) alp4

d) al3p3

Accepted Answer

{ "quality": "clear", "question_count": 1, "skills_matched": [ "step_cot", "multiple_choice_formatter", "explain_then_answer", "quick" ], "needs_drawing": false, "concepts_used": [ "Anions and Cations", "Ionic Charge" ], "new_concepts": [ "Ionic Compound Formulas", "Aluminum Phosphide" ], "current_concepts": [ "Anions and Cations", "Ionic Charge", "Ionic Compound Formulas", "Aluminum Phosphide" ] } ## Identify the charges of the constituent ions $$ \begin{aligned} &\text{Aluminum (Al): Group 13 metal} ightarrow \text{Al}^{3+}\ &\text{Phosphorus (P): Group 15 nonmetal} ightarrow \text{P}^{3-} \end{aligned} $$ ## Determine the simplest ratio for a neutral compound $$ \begin{aligned} &1 \times (+3) + 1 \times (-3) = 0\ &\text{Ratio of Al to P} = 1:1 \end{aligned} $$ ## Write the empirical chemical formula $$ \text{Formula} = \text{AlP} $$

(A) AlP

(B) AlP$_2$

(C) AlP$_4$

(D) Al$_3$P$_3$

{ "subject": "Natural Science", "question_type": "Multiple Choice", "knowledge_point": [ "Natural Science", "Chemistry", "Ionic Compound Formulas" ] }

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Question

Explanation:

Identify the charges of the constituent ions

Determine the simplest ratio for a neutral compound

Write the empirical chemical formula

Answer: