Covalent Bonding and Electron Dot Structures

Which substance has three covalent bonds?

• H2O

• CH2Cl2

• NH3

• CCl4

Based on the Lewis dot structures, which of the following contains a nonbonding (lone) pair of electrons?

• H2

• NH3

• CH4

• BH3

How many valence electrons does a nitrogen atom have?

• 2

• 3

• 5

• 8

Tags

NGSS.HS-PS1-1

What is the H-C-H angle in methane, CH4?

• 180°

• 120°

• 109.5°

• 90°

___________ bonds result from the sharing of electrons between two nuclei.

Tags

NGSS.HS-PS1-1

__________ is the joining of two atoms in a stable arrangement.

Tags

NGSS.HS-PS1-1

________________ are electron dot representations for molecules. It is a 2D model representing bonding and does not represent molecular shape

_____________ is the charge assigned to

individual atoms in a Lewis structure

_________________ indicates what fraction of a hybrid orbital the 2s orbital contributed to form it

________________ are two Lewis structures with the same placement of atoms, but a different arrangement of electrons