Valence Electrons and Chemical Bonds

Which of the following describes covalent bonds?

• Bonds form because of opposite charges

• electrons are shared to fill outer electron shells

• Electrons are transferred between atoms

• Covalent bonds are magical

Tags

NGSS.HS-PS1-1

How many electrons should Nitrogen have around its Lewis dot model?

• 1
• 3
• 4
• 5

For representative elements (Groups 1A - 8A), the number of valence electrons is equal to

• the group number

• the period number

• the atomic number

• the group number minus 10

Tags

NGSS.HS-PS1-1

Valence electrons are the...

• Innermost electrons
• Middle electrons
• Outermost electrons
• Any electrons

For metals (groups 1-3), its easier to _____ electrons to have a full outer shell.

• gain

• lose

• share

For nonmetals (grousp 5-7), its easier to _____ electrons to have a full outer shell.

• gain

• lose

• share

Ionic bonds form between metals and ____.

• metalloids
• metals
• nonmetals

An ionic bond is the attraction between:

• oppositely charged ions
• similarly charged ions
• neutral ions
• neutral atoms

What elements generally make a covalent bond?

• metal and nonmetal
• 2 or more nonmetals
• metal
• none of the above

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The octet rules states that most elements want to have _____ valence electrons.

• 2

• 4

• 6

• 8