Ayuda ayuda, Cloro tiene 7 electrones de valencia. Hidrógeno tiene un electrón de valencia. ¿Cuántos átomos de hidrígeno formarán un enlace con un átomo de cloro?

Apart of the periodic table is shown. a portion of the sixteenth and seventeenth columns of the periodic table is shown. column 16 reads eight oxygen, 16 sulfur, and 34 selenium. column 17 reads nine flourine, 17 chlorine, and 35 bromine. which of the following elements is less reactive than the others? bromine (br) oxygen (o) selenium (se) sulfur (s)

Ascientist wanted to formulate a pill to attack a specific type of bacteria that infects the throat. which biological component would be best to use as a model for the pill's function? bacteriocytes phagocytes complement antibodies

What are levels of ecology and how can we remember them