Is the equation, $2Hg + O_2 = 2HgO$ a synthesis, decomposition, or exchange reaction?

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Answer 1 · 2015-12-04T18:51:02

Synthesis reaction.

The equation $2Hg+O_2->2HgO$ is under the form of:

$"Element "+" Element"->Product$ which is the general form of a synthesis reaction.

It is similar to $2H_2+O_2->2H_2O$ for the synthesis of water.

Is the equation, 2Hg + O_2 = 2HgO2Hg + O_2 = 2HgO a synthesis, decomposition, or exchange reaction?