Science, asked by anwar690, 1 year ago

valency of caco3
plz help me

Answers

Answered by manoj7879
2
+2 is the answer.........

anwar690: but plz explain how
Answered by srejoye19
2
The valency of calcium is +2 in the compound CaCO3 or Calcium Carbonate. It means that calcium atom has two free electrons in its outermost shell that is easily transferred to the CO3 or carbonate group, which has -2 valency or the space for 2 more electrons to complete the octet on the outermost shell.
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