Question

a compound XO is an ionic bond, where X represents one of the main group elements. To which main group X belongs to, no matter whether X is metal or non-metal?
A. non metal, VA
B. metal, IIIA
C. non metal, IIIA
D. metal, IIA
E. metal, IA

Answer 1

since the formula has a ratio of 1:1, and we know the oxygen must have an ionic charge of -2, what does the charge of X have to be?

And what main group has that charge?

Answer 2

+2 @JFraser

Answer 3

it is

Answer 4

metal IA ??

Answer 5

Group IA contains metals like lithium, sodium, and potassium, which all form ions with +1 charge...

Answer 6

metal IIA

Answer 7

that's the one

Answer 8

thank u @JFraser :)

Answer 9

YVW