Vì các nguyên tử có xu hướng kết hợp với nhau để tạo thành các nguyên tử bền vững

Trong trường hợp trên P nhường 3e , H nhường 1e để tạo thành cấu hình khí hiếm 

Last Saturday, I went to a live music concert that my school organized. I had the best time at that concert. I was astounded by the musical beauty and paid close attention to the artists' performances. My favorite singer, MONO also attended. The school hall served as the stage for the concert. I arrived at the location by 4:00 pm, and it started around 6.30 pm. To watch the full concert, I had to wait more than two hours to get the first row. So that I can enjoy the music and see my idol clearly. I got to the music concert with some of my best friends and my classmates. We all sat together in the same row. In fact, it was better for us because the front seats had noisier sound. I had a great time at the concert.