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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
State the reason to explain why covalent compounds "are bad conductors of electricity".
Ethane, with the molecular formula C2H6 has ______.
Buckminsterfullerene is spherical molecule in which 60 carbon atoms are arranged in interlocking hexagonal and pentagonal rings of carbon atoms.
How many pentagons of carbon atoms are present in one molecule of buckminsterfullerene?
Name the hardest natural substance known.
What type of bonds are present in Cl2 molecule? Draw their electron-dot structures.
Fill in the following blank with suitable word:
The form of carbon which is known as black lead is ...........
What type of chemical bond is present in chlorine molecule? Explain your answer.
Compare the properties of ionic compounds and covalent compounds.
Write two points of difference in the structures of diamond and graphite.
Out of KCl, HCl, CCl4 and NaCl, the compounds which are not ionic are:
(a) KCl and HCl
(b) HCl and CCl4
(c) CCl4 and NaCl
(d) KCl and CCl4
The pencil leads are made of mainly:
(a) lithium
(b) charcoal
(c) lead
(d) graphite
What do you understand by polar covalent compounds?
Explain the following briefly:
Cl2 is a non polar molecule, while HCl is a polar molecule.
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
X is likely to have a :
Name a neutral covalent molecule which contains one lone pair of electrons.
Draw an electron dot diagram to show the formation of the following compound.
Methane
Draw the electron dot structure of covalent compound methane (non polar) and HCL (polar) and give two difference between them.
Define the functional group and complete the following table.
| S.I. No. | Functional Group | Compound | Formula |
| (1) | ______________ | _______________ |
C2H5OH |
| (2) | _______________ | _______________ | CH3CHO |
Two carbon atoms can always form one or two covalent bonds.
