Which of the following is not a correct ionic formula unit?
bao
ca3n2
kcl
lis2

question 3(multiple choice worth 2 points)

when nitrogen and aluminum form an ionic bond, what is the formula?
n2al3
nal
al2n3
aln

question 4 (essay worth 3 points)

what is the formula of a compound formed between iodine (i) and aluminum (al)?

question 5(multiple choice worth 2 points)

what is the charge of an oxide ion?
2+
3+
2-
3-

question 6(multiple choice worth 2 points)

which of the following is a possible formula unit?
li3b
clo2
licl
pbn

question 7(multiple choice worth 2 points)

what subscripts are needed to complete the formula unit li_n_?
1,1
3,1
1,3
3,3

question 8 (essay worth 3 points)

what is the resulting formula unit when magnesium (mg) and nitrogen (n) bond?

question 9(multiple choice worth 2 points)

what element gains three electrons to fill its valence energy level?
s
n
al
c

number 4 and 8 are essays