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प्रश्न
Fill in the blank in the following sentence:
The number of single covalent bonds in C2H2 molecule are ...........
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उत्तर
The number of single covalent bonds in a C2H2 molecule is two.
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संबंधित प्रश्न
Explain why carbon forms compounds mainly by covalent bond.
Name a carbon containing molecule which has two double bonds.
State one major difference between covalent and ionic bonds and give one example each of covalent and ionic compounds.
Explain why, diamond can be used in rock drilling equipment but graphite cannot.
Describe the structure of diamond. Draw a simple diagram to show the arrangement of carbon atoms in diamond.
Explain why, diamond has a high melting point.
The atomic numbers of four elements P, Q, R and S are 6, 10, 12 and 17 respectively. Which two elements can combine to form a covalent compound?
(a) P and R
(b) Q and S
(c) P and S
(d) R and S
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 electronic configurations of three elements X, Y and Z are as follows:
| X | 2, 4 |
| Y | 2, 7 |
| Z | 2, 1 |
(a) Which two elements will combine to form an ionic compound?
(b) Which two elements will react to form a covalent compound?
Give reasons for your choice.
What is the difference between ionic compounds and polar covalent compounds?
State the type of bonding in the following molecule.
Hydroxyl ion
State the type of bonding in the following molecule.
Ammonium ion
Explain the following briefly:
Sodium chloride dissolves in water but carbon tetra chloride is insoluble in water.
Give examples for the following:
Two liquid non polar compounds.
What is the term defined below?
A bond formed by a shared pair of electrons, each bonding atom contributing one electron to the pair.
An element L consists of molecules.
Why L is heated with iron metal, it forms a compound FeL. What chemical term would you use to describe the change undergone by L?
Name two compounds that are covalent when taken pure but produce ions when dissolved in water.
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
| \[\begin{array}{cc} \phantom{..}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\ \phantom{..}|\phantom{....}|\phantom{....}|\\ \ce{H - C - C- C- H}\\ \phantom{.}|\phantom{....}|\phantom{....}|\\ \ce{H - C - H}\\ |\\\ce{H}\end{array}\] |
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
 |
Two carbon atoms can always form one or two covalent bonds.
