Which Statement About the Most Stable Lewis Structures of Cyanamide

question 13

Multiple Choice

Which statement about the most stable Lewis structures of cyanamide (H₂NCN) and its structural isomer (HNCNH) is not correct?

• A)Both have 16 valence electrons.
• B)One has a triple bond.
• C)One has two double bonds.
• D)All atoms in both structures have formal charges of zero.
• E)Cyanamide has an equivalent resonance structure with two double bonds.

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Definitions:

Femoral Artery

A major artery in the thigh that provides oxygenated blood to the lower part of the body.

Posterior Tibial Artery

A major blood vessel that supplies blood to the lower leg and foot.

Superior Vena Cava

The large vein carrying deoxygenated blood from the head, neck, and upper limbs to the heart.

Inferior Vena Cava

A large vein that carries deoxygenated blood from the lower and middle parts of the body to the right atrium of the heart.