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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the valency of oxygen?
💡 Hint: Think of how many electrons oxygen needs to fill its outer shell.
Question 2
Easy
Which element has a valency of 1?
💡 Hint: This element is the first in the periodic table.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the valency of nitrogen?
- 1
- 2
- 3
💡 Hint: Think about how many bonds nitrogen can form.
Question 2
True or False: The valency of chlorine is 2.
- True
- False
💡 Hint: Consider chlorine's position in the periodic table.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Explain why the formula for calcium chloride is CaCl₂.
💡 Hint: Think about how many of each atom you need to balance the charges.
Question 2
Write the chemical formula for the compound formed between iron (III) and sulfate ions.
💡 Hint: Apply the criss-cross method carefully considering the charges.
Challenge and get performance evaluation