Which of the following atoms has four electrons available for covalent bonding, and can form rings, long chains, and double bonds, making it the building block of the most versatile complex biological molecules?

Which of the following atoms has four electrons available for covalent bonding, and can form rings, long chains, and double bonds, making it the building block of the most versatile complex biological molecules?

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Which of the following atoms has four electrons available for covalent bonding, and can form rings, long chains, and double bonds, making it the building block of the most versatile complex biological molecules?



A) Carbon

B) Silicon

C) Hydrogen

D) Oxygen



Answer: A) Carbon


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