How are elements with similar properties grouped in the periodic table? A. In the same half
B. In the same column
C. In the same row
D. In the same box

AA

Explanation:

in theory, limestone is composed principally of the compound calcium carbonate - caco3, but in reality this compound is deposited in conditions involving a number of other compounds as impurities so it ends up being a mixture of many compounds.

hope this : -)

tony (lordcaos066)