Chemistry

Problem

Find the incorrectly matched pair? | Column-I (ores) | |--------------------------| | (a) Sylvine | | (b) Malachite | | (c) Cinnabar | | (d) Fluorite (Flourspar) | | Column-II (metals) | |--------------------| | (1) Potassium | | (2) Magnesium | | (3) Mercury | | (4) Calcium |

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