Question

Can Ca(No3)2 be calcium II nitrate and

Answer 1

yes

Answer 2

Or can it be written as calcium nitrate

Answer 3

yes

Answer 4

It can be both. They are the same it can be calcium nitrate or calcium III nitrate

Answer 5

not calcium III

Answer 6

Sorry I meant calcium Ii

Answer 7

It is the same

Answer 8

yes

Answer 9

What about ( NH4)3PO4

Answer 10

Is that ammonium III phosphate

Answer 11

No. The number refers to the valence of the cation. The name is simply ammonium phosphate.

Answer 12

So whenever there is a II in the or Romano numeral does that mean in the formula there should always be parentheses I. The formula

Answer 13

Yes. Put the Roman numeral in parentheses

Answer 14

Does that mean for example iron II oxide

Fe(02)3

Answer 15

Is is really Fe(02)3

Answer 16

Fe(II)O

Answer 17

Because the valence of Fe (II) is +2
The valence of O is -2

Answer 18

Can I put Fe(02)3 or is that wrong

Answer 19

What is oxide formula

Answer 20

\[Fe _{2}(III)O _{3}\]

Answer 21

The oxide ion has valence -2

Answer 22

So it is O or is it O2

Answer 23

What is calcium oxide

Answer 24

Is it CaO or CaO2

Answer 25

CaO. You have to make sure the positives are equal to the negatives.

Answer 26

Ca ion has +2 charge
O ion has -2 charge

Answer 27

S is oxide always O

Answer 28

yes. But you can have more than one atom. If you have \[O _{3}\]
the charge of each atom is still -2 but you have 3 atoms so the total of the negatives is -6