Chemistry Nov 2024 Test

Covalent Bond

Covalent Bond

Two atoms share electrons between them; occurs between two nonmetals

Ionic Bond

One atom donates electron(s) the other accepts. A bond is formed by attraction between newly formed ions. Occurs between metal and non-metal ions.

Single, Double, and Triple covalent bonds

The types of covalent bonds that can form between elements

Polar covalent compound

Shares electrons unequally

Nonpolar covalent compound

Shares electrons equally

Fluorine

has the highest electronegativity; central atoms have the lowest electronegativity

Double covalent bond or single covalent bond

What type of bond forms between two hydrogen atoms in H2? (also applies to O2)

Triple covalent bond

What type of bond forms between two nitrogen atoms in N2?

Single covalent bond

What type of bond forms between oxygen and hydrogen atoms in H2O?

Hydrogen bond

What type of bond forms between two water molecules?

Oxygen

a diatomic molecule

Lone pair

a pair of electrons that is not involved in bonding and that belongs exclusively to one atom

How to draw a Lewis Dot Structure

1. Draw backbone of compound
2. Molecule valence electrons = sum all valence electrons of each atoms
3. Draw single bond
4. Complete octet of all atoms bonded to central
5. Place extra electrons on central. If central atom has less than octet, write double or triple bonds