What atomic or hybrid orbitals make up the sigma bond between c2 and cl in dichloroethylene, ch2ccl2? (c2 is the second carbon in the structure as written. ).

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the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).

answer:

technetium is the most reactive. this is followed by silver. the least reactive out of these three elements is strontium.