19. For the molecule ethylene (C₂H₄), determine the oxidation state, valence, and formal charge for C. Hint: valence is the number of electrons an atom uses in bonding.(A)+2, 2, 0(B)-2, 2, 2(C)-4, 4, 0(D)-2, 4, 0(E)4, 4, 0

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

19. For the molecule ethylene (C₂H₄), determine the oxidation state, valence, and formal charge for C. Hint: valence is the number of electrons an atom uses in bonding.
(A)+2, 2, 0
(B)-2, 2, 2
(C)-4, 4, 0
(D)-2, 4, 0

(E)4, 4, 0

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