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The model is made of an ionic compound of aluminum and chlorine. Aluminum has an oxidation number of 3 and chlorine has an oxidation number of -1. Based on the evidence, predict the chemical formula, chemical name and properties of the compound between aluminum and chlorine.

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Answer:

Chemical Formula: AlCl₃

Chemical Name: Aluminium Chloride

Properties are given below.

Step-by-step explanation:

Chemical Formula:

Chemical formula depicts the total number of elemants forming a particular compound. It is common that all compounds are neutral in nature despite of the internal charges they contain. As given Aluminium has a + 3 charge while Chlorine has a -1 charge, therefore, to make a neutral compound we will require 3 Cl⁻ ions to neutralize one Al³⁺ ion hence, the chemical formula will be AlCl₃.

Chemical Name:

According to rules ionic compounds are named by naming the positive part first followed by negative part. In this case Al³⁺ being is name d first followed by Cl⁻ (remember the -ine in anions is replaced by -ide) hence, this compound will be name as Aluminium Chloride.

Properties:

Few physical and chemical properties of AlCl₃ are;

(i) It melts at 192.4 °C

(ii) Highly Soluble in water

(iii) It has a density of 2.48 g/cm³

(iv) Poor conductor of electricity

(v) It is used as catalyst in many organic reactions

(vi) Reacts with silver nitrate to form silver chloride and Aluminium Nitrate

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