P (Z = 15): 1s22s22p63s23p3 , P có 5 electron hóa trị cần thêm 3 electron để đạt octet.

H (Z = 1): 1s1,  H có 1 electron hóa trị cần thêm 1 electron để đạt octet.

Khi hình thành liên kết, P góp chung 3 electron với 3 electron của 3 H ⇒ Trong PH3, xung quanh P có 8 electron giống khí hiếm Ar còn 3 H đều có 2 electron giống khí hiếm He.

Title: A memorable night in Lao Cai.

Just last month, I attended a music event that took place in Lao Cai. The event took place from 6pm to 10pm and the venue was Lao Cai city. I went with my family.

As we entered the hall, we were greeted by a very lively atmosphere. The atmosphere was vibrant, with people of all ages dancing and tapping their feet to the rhythm. The hall was beautifully lit, with twinkling lights hanging from the trees, creating a magical atmosphere.

We spent the evening listening to the performances and songs performed by famous singers. It was truly a wonderful music event. Overall, the event was an unforgettable experience. The atmosphere was vibrant and the music was truly captivating. I feel very grateful to have been able to go to a music concert with my family.