Blended learning is a combination of online and traditional learning, offering many benefits for students and teachers.

First, it provides flexibility. Students can study online at their own pace and attend in-person classes for discussions and group work. This helps them balance learning with other responsibilities.

Second, it improves understanding. Online lessons give students access to materials anytime, while classroom sessions allow them to ask questions and practice what they’ve learned. It also encourages independent learning, helping students develop self-discipline and research skills.

Additionally, blended learning saves time and money by reducing travel and material costs. It also increases engagement through interactive content and technology, making lessons more interesting.

In conclusion, blended learning combines the best aspects of online and traditional education, making learning more effective, flexible, and engaging for students.

P có 5e hóa trị cần thêm 3e để đạt octet 

H có 1e hóa trị cần thêm 1e để đạt octet 

=> Khi hình thành liên kết, P góp 3 e với 3e của 3 H nên trong PH3 , xung quanh P có 8e giống khí Ar còn 3 H đều có 2e giống khí hiếm He