A covalent bond forms when atoms

• share neutrons

• transfer electrons

• share electrons

• transfer neutrons

Which element consists of positive ions immersed in a "sea" of mobile electrons?

• sulfur

• hydrogen

• calcium

• chlorine

What is the charge of any element that is uncombined?

• the same as the group number

• the same as the valence electrons

• zero

• the same as the period number

How many valence electrons does nitrogen have?

• 2

• 3

• 4

• 5

Tags

NGSS.HS-PS1-1

When an atom forms a bond

• energy is released

• energy is absorbed

• potential energy increases

• it becomes less stable

Tags

NGSS.HS-PS1-4

True or false an ionic bond can form between a metal and a polyatomic ion

• true

• false

Predict the bond between phosphorous and fluorine

• covalent

• ionic

• metallic

• none of the above

Tags

NGSS.HS-PS1-2

What type of bonding is represented by this picture

• metallic

• covalent

• coordinate covalent

• ionic

What is the oxidation number of a potassium ion?

• 0

• +1

• 2-8-8-1

• -1

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many valence electrons are represented by the following Bohr diagram

• 16

• 8

• 6

• 2

Tags

NGSS.HS-PS1-1