Elepeodowke
03.11.2019 •
Chemistry
Which statement is true about a polyatomic ion?
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Ответ:
A polyatomic ion is a molecuar ion that is composed of more than one element. The elements in this molecule are chemically bonded and is a charge chemical species. These atoms act as a simgle unit. Examples are C2H3O2^- (acetate), CO3^2- (carbonate) and CrO4^2- (chromate).
Ответ:
Explanation:
The electron in low shell also has low energy and when it move to higher ... to an higher level BUT the amount of energy it absorbs must exactly match ... in the violet); these energies (corresponding to E=h⋅frequency for each