Advertisements
Advertisements
Question
What is the difference between ionic compounds and polar covalent compounds?
Advertisements
Solution
Ionic compound:
- They usually have high melting points and boiling points.
- They are soluble in water. (NaCl)
- They often conduct electricity in a molten state.
- They are usually crystalline solids.
Polar covalent compound:
- Atoms do not have an equal distribution of shared electron pairs.
- They ionise in water.
- They are not electrically neutral.
- Bond is formed between dissimilar atoms such as H2O, NH3, HCl.
APPEARS IN
RELATED QUESTIONS
Name the hardest natural substance known.
What type of chemical bond is formed between carbon and bromine?
Give the formula of the compound that would be formed by the combination of the following pair of elements:
K and H
Draw an electron dot structure of the following molecule. (Without showing the circle) :
Water
Write scientific reason.
Benzene compounds are called aromatic compounds.
Considering MgCl2 as ionic compound and CH4 as covalent compound give any two differences between these two compounds.
Cation is formed when ______.
Two carbon atoms can always form one or two covalent bonds.
The table shows the electronic structures of four elements.
| Element | Electronic Structure |
| P | 2, 6 |
| Q | 2, 8, 1 |
| R | 2, 8, 7 |
| S | 2, 8, 8 |
- Identify which element(s) will form covalent bonds with carbon.
- “Carbon reacts with an element in the above table to form several compounds.” Give suitable reason.
______ is an example of a covalent compound having a high melting point.
