Advertisements
Advertisements
प्रश्न
A molecule of ammonia (NH3) has
पर्याय
only single bonds
only double bonds
only triple bonds
two double bonds and one single bond
Advertisements
उत्तर
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
संबंधित प्रश्न
Write the electron-dot structure for the following molecule.
Cl2
What type of bond exist in CCl4?
Which inert gas does the H atom in HCl resemble in electron arrangement?
Using electron-dot diagrams which show only the outermost shell electrons, show how a molecule of oxygen, O2, is formed from two oxygen atoms. What name is given to this type of bonding? (At. No. of oxygen = 8)
Explain why, graphite can be used as a lubricant but diamond cannot.
What is graphite?
Why is graphite a good conductor of electricity but diamond is a non-conductor of electricity?
The organic compound prepared by Wohler from an inorganic compound called ammonium cyanate was:
(a) glucose
(b) urea
(c) uric acid
(d) vinegar
The pencil leads are made of mainly:
(a) lithium
(b) charcoal
(c) lead
(d) graphite
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.
Give two example in following case:
Solid covalent compounds
Draw an electron dot structure of the following molecule. (Without showing the circle) :
Ethene
Draw an electron dot diagram to show the formation of the following compound.
Methane
State the type of bond formed, and draw Lewis structure of water.
The bond between two oxygen atoms is _______ bond.
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
 |
Consider the coordination compound, K2[Cu(CN)4]. A coordinate covalent bond exists between:
When ethyl alcohol and acetic acid are mixed, the resulting ester has a chemical formula ______.
The correct structural formula of butanoic acid is -
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
