Which element is oxidized in the following reaction: 2fecl₂ + cl₂→2fecl₃ if fe goes from + 2 to +3 and cl goes from 0 to −2?

cl and fe

fe

neither element

cl

Fe.

Explanation:

Fe goes from + 2 to +3, so, it is the element that is oxidized.

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the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.