Precizează care dintre ionii:
K+, Ca2+, I-, Mg2+, N3-, Cl-, sunt izoelectronici.

Why is the structure of molecule important to its function?

Which of these is not an example of chemical weathering? a. iron-rich mineral rusting b. feldspar turning into clay c. limestone reacting with acid d. granite breaking up into sand

Select the statement that describe chemical properties a. antacid tablets neutralize stomach acid b. helium is the lightest monatomic element c. water freezes at 0 celsius d. mercury is liquid at room temperature