students. This method combines face-to-face learning with online lessons, allowing learners to interact with teachers while studying at their own pace. In-person classes help improve communication and teamwork skills, while online learning provides flexibility and convenience. Students can review lessons anytime and develop their digital skills, which are essential in today’s world. Moreover, blended learning makes lessons more engaging through videos, games, and interactive materials. This approach supports different learning styles and increases motivation. As a result, blended learning helps improve academic performance and creates a more personalized and effective learning experience.

P(Z=15):có 5 electron lớp ngoài cần 3 electron để đạt 8 electron bề vững

H(Z=1): có 1 electron cần 1 electron để đạt cấu hình Heli

Liên kết : mỗi nguyên tử H chia sẻ một electron với P tạo 3 liên kết cộng hóa trị đơn P-H