Which of the following pairs of atoms do NOT exhibit a covalent bond?
Answer

O and S

C and H

Sr and F

F and H

and

Explain the relationship between sugars (glucose) and starches (carbohydrates). Use the terms, monomer and polymer, in your explanation.

Question

Which of the following pairs of atoms do NOT exhibit a covalent bond?
Answer
		
O and S
		
C and H
		
Sr and F
		
F and H

and

Explain the relationship between sugars (glucose) and starches (carbohydrates). Use the terms, monomer and polymer, in your explanation.

thomaster · Answer

A covalent bond is a bond between 2 non-metals (or nonmetal&metalloid)
An ionic bond is a bond between a metal and a non-metal.

$\LARGE\underbrace{O_{(non-metal)}+S _{(non-metal)}}_{covalent}$

$\LARGE\underbrace{C_{(non-metal)}+H _{(non-metal)}}_{covalent}$

$\LARGE\underbrace{Sr_{(metal)}+F _{(non-metal)}}_{ionic}$

$\LARGE\underbrace{F_{(non-metal)}+H _{(non-metal)}}_{covalent}$

anonymous · Answer

Thank you - I had begun to catch on already :) Any idea about the second one?