Bonding Chemistry 20 Review

The Lewis structure of N₂H₂ shows __________.

• a nitrogen-nitrogen triple bond

• a nitrogen-nitrogen single bond

• each nitrogen has one lone pair

• each nitrogen has two lone pairs

• each hydrogen has one lone pair

The ability of an atom in a molecule to attract electrons is best quantified by the ______.

• electronegativity

• magnetism

• ion charge

• electron change-to-mass ratio

Potassium iodide, KI,has the following bonding:

• ionic

• metallic

• nonpolar covalent

• polar covalent

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

NGSS.HS-PS1-3

Choose the correct shape for H₂S

• Tetrahedral

• Trigonal pyramidal

• Bent

• Trigonal planar

The electronegativity of C is 2.5, F is 4.0.  predict the character of a C-F bond.

• polar covalent
• nonpolar covalent
• ionic
• metallic

Tags

NGSS.HS-PS1-1

The following molecules all contain polar bonds however only one is a polar molecule.  Which one?

• CCl₄
• CO₂
• NH₃
• CH₄

 A lone pair is defined as

• A pair of bonding electrons
• One non-bonding electron
• A pair of non-bonding electrons
• A pair of electrons on the central atom

Of the following molecules, which has the largest dipole moment (strongest polar bond)?

• CO

• HF

Which molecule would have this shape?

• BF₃
• CH₄
• PCl₅
• CO₂

Who could this molecule be?

• CH₄
• CO₂
• PCl₅
• BF₃

Tags

NGSS.HS-PS1-3