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.

Blog Post: An Unforgettable Night at Rhythm Fest

Last Saturday, I went to Rhythm Fest, a music festival held in the lively downtown area at Greenfield Park. I went with my best friends, Sarah, Mark, and Jamie. From the moment we arrived, the atmosphere was electric—people laughing, music echoing everywhere, and colorful lights illuminating the night. The energy was contagious, and it felt like we were all part of one big, vibrant community.

We spent the evening hopping between stages, dancing, and cheering for some of our favorite bands and DJs. I even got to try street food from different vendors, which added to the excitement. I felt a pure sense of joy and freedom, surrounded by good friends and great music. It was one of those nights I’ll never forget!