Advertisements
Advertisements
Question
State whether the following statement is true or false:
Diamond and graphite are the covalent compounds of carbon element (C)
Solution
False
Diamond and graphite are the allotropic forms of carbon (C) with covalent bonding between different carbon atoms.
APPEARS IN
RELATED QUESTIONS
State the reason why carbon can neither form \[\ce{C^4+}\] cations nor \[\ce{C^4−}\] anions but forms covalent compound.
State the reason to explain why covalent compounds "have low melting and boiling points."
Name the black substance of pencil. Will the current flow through the electrical circuit when we use the sharpened ends of the pencil to complete the circuit?
Write the electron-dot structure for the following molecule.
Cl2
What type of bonds are present in H2 molecule? Draw their electron-dot structures.
What is the atomic number of carbon. Write its electronic configuration.
Describe the structure of diamond. Draw a simple diagram to show the arrangement of carbon atoms in diamond.
You can buy solid air-freshners in shops. Do you think these substance are ionic or covalent? Why?
State the type of bonding in the following molecule.
Methane
Elements forming ionic compounds attain noble gas electronic configuration by either gaining or losing electrons from their valence shells. Explain giving reason why carbon cannot attain such a configuration in this manner to form its compounds. Name the type of bonds formed in ionic compounds and in the compounds formed by carbon. Also explain the reason why carbon compounds are generally poor conductors of electricity.
Explain the following term with example.
Covalent bond
Give examples for the following:
Two gaseous non polar compounds.
(a) Compound X consists of molecules.
Choose the letter corresponding to the correct answer from the choices (a), (b), (c) and (d) given below
In the liquid state, X will
Elements Q and S react together to form an ionic compound. Under normal conditions, which physical state will the compound QS exist in?
Name two compounds that are covalent when taken pure but produce ions when dissolved in water.
What is the difference between :
Ionic compounds and covalent compounds
In the formation of electrovalent compounds, electrons are transferred from one element to another. How are electrons involved in the formation of a covalent compound?
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
| \[\begin{array}{cc} \phantom{.........}\ce{H}\\ \phantom{.........}|\\ \ce{H - C ≡ C - C - H}\\ \phantom{.........}|\\ \phantom{.........}\ce{H} \end{array}\] |
Carbon forms four covalent bonds by sharing its four valence electrons with four univalent atoms, e.g. hydrogen. After the formation of four bonds, carbon attains the electronic configuration of
Statement (A): Covalent compounds are bad conductors of electricity.
Reason (B): Covalent compounds contain charged particles (ions)
