7. Below is the molecular structure of an efficient catalyst for the deconstruction of polyethylene (PE), what is the oxidation state of Ir?(A)0(B)+1(C)+2(D)+3(E)+5

1. Which breakthrough was awarded the Nobel Prize in Chemistry in 2023?(A)Development of ultra-high-resolution electron microscopy for biological systems(B)Discovery and synthesis of quantum dots(C)Discovery of a new class of antibiotics targeting antibiotic-resistant bacteria(D)Advancements in computational chemistry for drug discovery(E)Creation of sustainable and efficient hydrogen production methods

7. Below is the molecular structure of an efficient catalyst for the deconstruction of polyethylene (PE), what is the oxidation state of Ir?
(A)0
(B)+1
(C)+2
(D)+3

(E)+5

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