Factors Influencing the Formation of Ionic Bond:
Q. When electrons are shared unequally the bond is?
polar covalent bond
Table of Contents
- Q. When electrons are shared unequally the bond is?
- Q. What is an ionic bond with two suitable example explain the difference between an ionic and covalent bond?
- Q. Which is most Favourable for ionic bond?
- Q. Which among the following is most ionic?
- Q. Which compound is highest covalent?
- Q. Which compound has dative bonding?
- Q. Which of the following compound has highest covalent character LiCl LIBR LiF Lil?
- Q. Which is the correct order of covalent character LiF LiCl LiBr Lil?
- Q. Which is more covalent LiCl or Lil?
- Q. Which is the correct order of covalent character LiF?
- Q. Which of the following is correct order of covalent character NaCl KCl RbCl?
- Q. Why LiCl is more covalent than NaCl or KCl?
- Q. Is LiCl stronger than KCl?
- Q. Why is CuCl more covalent than KCl?
Q. What is an ionic bond with two suitable example explain the difference between an ionic and covalent bond?
Difference Between Ionic and Covalent Bonds
| Covalent Bonds | Ionic Bonds | |
|---|---|---|
| Room Temp. State | Gas/Liquid | Solid |
| Shape | Not definite | Definite |
| Common Example | Hydrogen Chloride (HCl) | Sodium chloride (NaCl) |
| Happens Between | Metal and non-metal | Two non-metals |
- Ionization energy: It is defined as the amount of energy required to remove the most loosely bound electron from an isolated gaseous atom of an element.
- Electron affinity: It is defined as the amount of energy released when an electron is added to an isolated gaseous atom of an element.
- Lattice energy:
Q. Which is most Favourable for ionic bond?
-From the points discussed above, we can conclude that the most favourable conditions for the formation of ionic bonds are large cation and small anion. Hence, Option B is the correct option.
Q. Which among the following is most ionic?
According to Fajan’s Rule, Greater is the charge on the cation, greater will be the covalent character in the bond. Since, NaCl has low charge on cation(Na+) it has the most ionic character.
Q. Which compound is highest covalent?
The compound with the highest covalent character is CaI2. Therefore, the correct answer is option (D).
Q. Which compound has dative bonding?
An example of a dative covalent bond is provided by the interaction between a molecule of ammonia, a Lewis base with a lone pair of electrons on the nitrogen atom, and boron trifluoride, a Lewis acid by virtue of the boron atom having an incomplete octet of electrons.
Q. Which of the following compound has highest covalent character LiCl LIBR LiF Lil?
Answer. Fajans rule states that the polarising power is directly proportional to the radius of anion. hence the bigger the anion the more covalent it is. Hence LiCl is the most ionic whereas LiI is most covalent.
Q. Which is the correct order of covalent character LiF LiCl LiBr Lil?
LiCl < LiI < LiBr.
Q. Which is more covalent LiCl or Lil?
LiCl is more covalent than LiF because the size of the anion in Lithium Chloride is bigger than cation (as per Fajan’s rule). Hence, the covalent character in LiCl is greater than LiF.
Q. Which is the correct order of covalent character LiF?
Hence lithium halides have partial covalent character. The anion with larger size can be easily distorted. The increasing order of the ionic size is Cl−
Q. Which of the following is correct order of covalent character NaCl KCl RbCl?
Smaller the cation, greater is its polarizing power and hence larger is the covalent character. The covalent character decreases as the size of cation increases LiCl > NaCl > KCl > RbCl.
Q. Why LiCl is more covalent than NaCl or KCl?
This is due to a phenomenon called polarization. It causes the formation of partial covalent character in an ionic bond. The anion here is same, Cl-, but the cation Li+ is much smaller than K+ and so more polarization occurs in LiCl, thereby making it more covalent than KCl.
Q. Is LiCl stronger than KCl?
Since sodium is the smaller cation the lattice energy of NaCl is much greater than that of KCl. Here the cation is same ,so the bigger the anion,more the covalent character and therefore LiCl is ionic which implies its melting point is higher.
Q. Why is CuCl more covalent than KCl?
a Due to smaller size and high poalrising power of Li+ ion LiCl is more covalent than KCl. b Small cation Li+ ion highly polarizes large anion I- LiI is more covalent and hence has lower melting point. c Due to pseudo inert gas configuration Cu+ is more polarizing than Na+ and hence CuCl is more Covalent NaCl.
