You can draw it in many different ways. Some are given below
Ca—–C===0 | | | | 0——0
And second one is
[Ca]2+[CO3]2−
And the third one may be:
[Ca=0][O=C=0]
You can draw it in many different ways. Some are given below
Ca—–C===0 | | | | 0——0
And second one is
[Ca]2+[CO3]2−
And the third one may be:
[Ca=0][O=C=0]