Practice Valency Rules For Compounds (5.5.2) - Language of Chemistry

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6 sample questions

Question 1.
What is the valency of Hydrogen?
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Go back to the list of common valencies.
Question 2.
Calcium has a valency of ?
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Think of its position in the periodic table.
3Question 3.
What is the valency of Oxygen?
- 1
- 2
- 3
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Refer back to the table of common valencies.
4Question 4.
True or False: The criss-cross method can be used for all compounds.
- True
- False
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Think about the types of bonding.
Question 5.
If you have a solution that contains Aluminum with a valency of 3 and Oxygen with a valency of 2, write the formula for Aluminum Oxide.
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Remember to balance the charges when forming compounds.
Question 6.
How would you write the formula for a compound made of Potassium (valency 1) and Phosphate (valency 3)?
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Don’t forget that phosphate is a polyatomic ion!

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