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प्रश्न
Draw electron - dot structure and structural formula of methane.
Draw electron dot diagram and structure of methane.
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उत्तर
Electron dot:
\[\begin{array}{cc}
\ce{\underset{\bullet\bullet}{\mathbf{H}}}\\
\ce{\mathbf{H} ^{\bullet}_{\bullet} \mathbf{C}^{\bullet}_{\bullet} \mathbf{H}}\\
\ce{\overset{\bullet\bullet}{\mathbf{H}}}\
\end{array}\]
Molecular structure:
\[\begin{array}{cc}
\ce{H}\\
|\\
\ce{H - C - H}\\
|\\
\phantom{.}\ce{H}\
\end{array}\]
Notes
Students should refer to the answer according to their questions.
संबंधित प्रश्न
State the reason to explain why covalent compounds "are bad conductors of electricity".
Give appropriate scientific reasons for Carbon tetrachloride does not conduct electricity.
Why does carbon form compounds mainly by covalent bonding?
Give one example, state what are covalent compounds?
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.
An element E exists in three allotropic forms A, B and C. In allotrope A, the atoms of element E are joined to form spherical molecules. In allotrope B, each atom of element E is surrounded by three other E atoms to form a sheet like structure. In allotrope C, each atom of element E is surrounded by four other E atoms to form a rigid structure.
(a) Name the element E.
(b) What is allotrope A.
(c) What is allotrope B?
(d) What is allotrope C?
(e) Which allotrope is used in making jewellery?
(f) Which allotrope is used in making anode of a dry cell?
Give two example in following case:
Solid 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?
What is the term defined below?
A bond formed by a shared pair of electrons, each bonding atom contributing one electron to the pair.
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
| \[\begin{array}{cc}\phantom{......}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{..}\\ \phantom{.....}|\phantom{....}|\phantom{....}|\\ \ce{H - C - C = C}\\\phantom{.....}|\phantom{.........}|\\ \phantom{.....}\ce{H}\phantom{........}\ce{H}\end{array}\] |
