Advertisements
Advertisements
Question
A molecule of ammonia (NH3) has
Options
only single bonds
only double bonds
only triple bonds
two double bonds and one single bond
Solution
only single bonds
Explanation -
Three hydrogen atoms share their electrons with one nitrogen atom to form a molecule of ammonia, NH3. This allows nitrogen and hydrogen atom to attain the electronic configuration of the nearest noble gas Ne and He, respectively. The shared pair of electron is said to contribute a single covalent bond. So there are 3 single covalent bonds in ammonia.
APPEARS IN
RELATED QUESTIONS
Write the number of covalent bonds in the molecule of butane, C4H10.
What are covalent compounds?
State the reason why carbon can neither form \[\ce{C^4+}\] cations nor \[\ce{C^4−}\] anions but forms covalent compound.
State the type of bonding in the following molecule.
Water
Explain the formation of a chlorine molecule on the basis of electronic theory of valency.
Which inert gas does the H atom in HCl resemble in electron arrangement?
Why is graphite a good conductor of electricity but diamond is a non-conductor of electricity?
The electronic configurations of two elements A and B are given below:
| A | 2, 6 |
| B | 2, 8, 1 |
(a) What type of chemical bond is formed between the two atoms of A?
(b) What type of chemical bond will be formed between the atoms of A and B?
What is the difference between ionic compounds and covalent compounds?
Give the characteristic properties of covalent compounds.
State the type of bonding in the following molecule.
Water
Draw an electron dot structure of the following molecule. (Without showing the circle) :
Methanol
Explain the following:
Covalent compounds have low melting and boiling point.
Explain the following:
Non-polar covalent compounds are insoluble in water.
Covalent bonds can be single, double or triple covalent bonds. How many electrons are shared in each? Give an example of each type.
Define a covalent bond.
Name greenish-yellow gas which also bleaches.
Give an example for each of the following statement
A compound in which two Covalent bonds are formed.
Identify the incorrect statement and correct them.
- Like covalent compounds, coordinate compounds also contain charged particles (ions). So they are good conductors of electricity.
- Ionic bond is a weak bond when compared to Hydrogen bond.
- Ionic or electrovalent bonds are formed by mutual sharing of electrons between atoms.
- Loss of electrons is called Oxidation and gain of electron is called Reduction.
- The electrons which are not involved in bonding are called valence electrons.
Two carbon atoms can always form one or two covalent bonds.
