Advertisements
Advertisements
Question
An element A has 4 valence electrons in its atom whereas element B has only one valence electron in its atom. The compound formed by A and B does not conduct electricity. What is the nature of chemical bond in the compound formed? Give its electron-dot structure.
Advertisements
Solution
The compound formed by elements A and B has covalent bonds between their atoms. One atom of element A reacts with four atoms of element B to share its one electron.
Its electron-dot structure is represented as:
APPEARS IN
RELATED QUESTIONS
Give reason why carbon compounds are generally poor conductors of electricity.
State the reason why carbon can neither form C4+ cations nor C4− anions but forms covalent compound.
Choose the correct answer from the options given below:
Which of the following is a common characteristic of a covalent compound?
1) high melting point
2) consists of molecules
3) always soluble in water
4) Conducts electricity when it is in the molten state
will CS2 conduct electricity or not?
give reason for your choice.
Explain why, diamond has a high melting point.
State any two uses of graphite.
Buckminsterfullerene is an allotropic form of the element:
(a) phoshorus
(b) fluorine
(c) carbon
(d) sulphur
Which of the following cannot exhibit isomerism?
(a) C4H10
(b) C5H12
(c) C3H8
(d) C6H14
The covalent bond in which the electrons are shared equally between the combining atoms.
Explain the structure of Ammonium ion.
Explain the following:
Covalent compounds have low melting and boiling point.
What are the term defined below?
A bond formed by share pair of electrons, each bonding atom contributing one electron to the pair.
Name the anion present in the following compound:
When a barium chloride solution is added to a solution of compound B, a white precipitate insoluble in dilute hydrochloric acid is formed.
The molecular masses of a carbon compound spread over a range of _______.
Write a short note.
Aromatic hydrocarbons
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
| \[\begin{array}{cc} \phantom{.........}\ce{H}\\ \phantom{.........}|\\ \ce{H - C ≡ C - C - H}\\ \phantom{.........}|\\ \phantom{.........}\ce{H} \end{array}\] |
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
 |
Considering MgCl2 as ionic compound and CH4 as covalent compound give any two differences between these two compounds.
Give an example for each of the following statement.
A compound in which three 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.
