Advertisements
Advertisements
प्रश्न
A covalent molecule having a double bond between its atoms is:
(a) Hydrogen
(b) Oxygen
(c) water
(d) ammonia
Advertisements
उत्तर
(b) Oxygen
In an oxygen molecule, each oxygen atom shares its 2 electrons to complete its octet and forms double covalent bond between them.
APPEARS IN
संबंधित प्रश्न
State the reason why carbon can neither form C4+ cations nor C4− anions but forms covalent compound.
How does graphite act as a lubricant?
What do you call the compounds having the same molecular formula but different structural arrangements of atoms?
Draw the electron-dot structure of H2O compound and state the type of bonding.
Draw the electron-dot structure of NH3 and state the type of bonding.
Why is graphite a good conductor of electricity but diamond is a non-conductor of electricity?
A hydrocarbon having one double bond has 100 carbon atoms in its molecule. The number of hydrogen atoms in its molecule will be
(a) 200
(b) 198
(c) 202
(d) 196
The pencil leads are made of mainly:
(a) lithium
(b) charcoal
(c) lead
(d) graphite
State the type of bonding in the following molecule.
Water
State the type of bonding in the following molecule.
Methane
Explain the following briefly.
Pure water does not conduct electricity, but on adding sodium chloride to it, it starts conducting electricity.
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?
State the type of bond formed when the combining atom has zero E.N. difference.
Potassium chloride is an electrovalent compound, while hydrogen chloride is a covalent compound, But, both conduct electricity in their aqueous solutions. Explain.
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
 |
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
 |
When ethyl alcohol and acetic acid are mixed, the resulting ester has a chemical formula ______.
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.
The bond which is formed by the mutual sharing of electrons is called ______ bond.
