Chemistry
Grade-9
Easy
Question
What is the correct formula for aluminum sulfide?
- Al3S2
- Al2S
- AlS2
- Al2S3
Hint:
A compound always tends to be neutral.
The correct answer is: Al2S3
- In the chemical formula, metals are written first followed by non-metals.
- The subscript tells about the number of atoms present in each.
- A compound always tends to be neutral.
- Aluminum has an oxidation state of +3, and sulfur has an oxidation state of -2. To make the compound neutral two aluminum atoms and three sulfur atoms are required. Hence, the correct formula for aluminum sulfide is Al2S3.
Related Questions to study
Chemistry
What is the correct name of the compound NO2?
What is the correct name of the compound NO2?
ChemistryGrade-9
Chemistry
What is the correct name for the compound LiF?
What is the correct name for the compound LiF?
ChemistryGrade-9
Chemistry
What is the correct formula for the compound Phosphorus tribromide?
What is the correct formula for the compound Phosphorus tribromide?
ChemistryGrade-9
Chemistry
All binary compounds end with_____.
All binary compounds end with_____.
ChemistryGrade-9
Chemistry
What is the correct name of the compound CaCl2?
What is the correct name of the compound CaCl2?
ChemistryGrade-9
Chemistry
When writing chemical formulas, the ______ is always written first.
When writing chemical formulas, the ______ is always written first.
ChemistryGrade-9
Chemistry
When writing the chemical formula of a compound that contains more than one of a particular polyatomic ion, _____ must be used.
When writing the chemical formula of a compound that contains more than one of a particular polyatomic ion, _____ must be used.
ChemistryGrade-9
Chemistry
In a chemical formula, the total positive charge and negative charge must add equals to________.
In a chemical formula, the total positive charge and negative charge must add equals to________.
ChemistryGrade-9
Chemistry
Argentinum is the Latin name of:
Argentinum is the Latin name of:
ChemistryGrade-9
Chemistry
The element which is named after a place is __________.
The element which is named after a place is __________.
ChemistryGrade-9
Chemistry
From which of the following the symbol of chemical is not derived?
From which of the following the symbol of chemical is not derived?
ChemistryGrade-9
Chemistry
From which of the following the symbol of chemical is derived?
From which of the following the symbol of chemical is derived?
ChemistryGrade-9
Chemistry
The chemical symbol of calcium is
The chemical symbol of calcium is
ChemistryGrade-9
Chemistry
The metalloid among the following is
The metalloid among the following is
ChemistryGrade-9
Chemistry
The chemical symbol of sulfur is
The chemical symbol of sulfur is
ChemistryGrade-9
