5.5 - Valency
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions
What is the valency of oxygen?
💡 Hint: Think of how many electrons oxygen needs to fill its outer shell.
Which element has a valency of 1?
💡 Hint: This element is the first in the periodic table.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the valency of nitrogen?
💡 Hint: Think about how many bonds nitrogen can form.
True or False: The valency of chlorine is 2.
💡 Hint: Consider chlorine's position in the periodic table.
Get performance evaluation
Challenge Problems
Push your limits with advanced challenges
Explain why the formula for calcium chloride is CaCl₂.
💡 Hint: Think about how many of each atom you need to balance the charges.
Write the chemical formula for the compound formed between iron (III) and sulfate ions.
💡 Hint: Apply the criss-cross method carefully considering the charges.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.