Which of these chemical formulas is incorrect, and why?
OA. MgSO4, because the net charge is not zero
OB. AsRb, because the anion symbol should be second
OC. BeCl,, because the net charge is zero
D. NaF, because a metal and nonmetal cannot form a
binary ionic compound

Of the groups of elements below, which are most likely to gain electrons to become anions? a. alkali metal b. boron group c. halogen d. transition metal

Can someone me with these questions plz.

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space