Viết sự phân bố e của z=1 đến z=10 Lớp 1 chứa phân lớp 1s có 2e
Lớp 2 chứa phân lớp 2s , 2p có 2+6=8e

Aside from human impact, which of the following causes less water vapor production over a small area? (2 pderivartin

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

The msds for glacial acetic acid says that it is a flammable liquid that can severely burn any human tissue it comes in contact with. it reacts with bases, various metals, and strong oxidizing agents. its vapors can form explosive mixtures with air.