Chapter 7 Lesson 3 Quiz

Which of the following is true about Lewis structure? A. Hydrogen is always a terminal atom. B. The central atom is usually the one closest to the right side of the periodic table. C. The atom with the most attraction to shared electrons will be the central atom in the molecule. D. Hydrogen often forms double bonds.

A. Hydrogen is always a terminal atom.

Which of the following is not an exception to the octet rule? A. Molecules with odd numbers of valence electrons B. Coordinate covalent bonds C. Molecules with double bonded carbon atoms D. Stable configurations with less than 8 electrons around the atom

C. Molecules with double bonded carbon atoms

What is not true about resonance and resonance structures? A. Resonance occurs when more than one valid Lewis structure can be written for a molecule or ion. B. Resonance structures are two or more correct Lewis structures for a single ion or molecule. C. The molecule behaves as though it has multiple structures. D. Bond lengths are identical to each other and intermediate between single and double covalent bonds.

C. The molecule behaves as though it has multiple structures.

Resonance

Condition that occurs when more than one valid Lewis structure exists for the same molecule

Which of the following best describes a coordinate covalent bond? A. A bond that has more than one Lewis Structure B. A bond in which both atoms donate electrons to be shared C. A double bond D. A bond in which one atom donates both electrons to be shared.

D. A bond in which one atom donates both electrons to be shared.

If there is a positive charge, it is...

Negative

If there is a negative exponent, it is...

Positive

coordinate covalent bond

forms when one atom donates both of the electrons to be shared with an atom or ion that needs two electrons to form a stable electron arrangement with lower potential energy

Hydrogen is always

terminal, found on the outside

structural formula

uses letter symbols and bonds to show relative positions of atoms