what is bonding

Question

determine the type of bond holding the atoms together in the following compound:

 

A.  KCL

B.  NH3

CH4

D.  CO2

Answer 1

There are three bond types: ionic, metallic, and covalent.

Ionic bonds occur between a metal and a non-metal.

Metallic bonds occur between metals.

Covalent bonds occur between non-metals.

A. Ionic (Potassium is a metal, Chlorine is a non-metal)

B. Covalent (Nitrogen is a non-metal, Hydrogen is a non-metal)

C. Covalent (Carbon is a non-metal, Hydrogen is a non-metal)

D. Covalent (Nitrogen is a non-metal, Oxygen is a non-metal)

 

Be careful with hydrogen. It can act as a metal and non-metal. If it is bonded to a metal, it is an ionic bond. (This is very rare) If it is bonded to a non-metal it can be ionic or covalent. If it is listed first (i.e. HCl, or hydrochloric acid), then it is ionic. If it comes later (i.e. CH4, C6H12O6, C4H10) then it is covalent.

Answer 2

A)  KCl is an IONIC bond

 

B)  NH₃ is a COVALENT bond

 

C)  CH₄ is a COVALENT bond

 

D)  CO₂ is a COVALENT bond