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प्रश्न
Name the hardest natural substance known.
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उत्तर
Diamond is the hardest natural substance known.
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संबंधित प्रश्न
What type of bonds are present in CO2 molecule? Draw their electron-dot structures.
What is a covalent bond?
Compare the properties of ionic compounds and covalent compounds.
A covalent molecule having a double bond between its atoms is:
(a) Hydrogen
(b) Oxygen
(c) water
(d) ammonia
A saturated hydrocarbon has fifty hydrogen atom in its molecule. The number of carbon atoms in its molecule will be
(a) twenty five
(b) twenty four
(c) twenty six
(d) twenty seven
What is the difference between ionic compounds and covalent compounds?
State the type of bonding in the following molecule.
Water
Give two example in following case:
Gaseous polar compounds
Taking hydrogen chloride and methane as examples, distinguish between a polar covalent bond and a non polar covalent bond.
Choose the correct answer from the options given below
Which one is not example of polar covalent compound?
State the type of bonding in the following molecule.
Water
Draw the electron dot diagram and structure of methane.
Name a greenish-yellow gas which also bleaches.
Fill in the blank and rewrite the completed statement:
Covalent compounds are generally soluble in _________ solvents.
Write scientific reason.
Carbon has the property of forming many compounds.
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
| \[\begin{array}{cc} \phantom{..}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\\ \phantom{..}|\phantom{....}|\phantom{....}|\\ \ce{H - C - C- C- H}\\ \phantom{.}|\phantom{....}|\phantom{....}|\\ \ce{H - C - H}\\ |\\\ce{H}\end{array}\] |
A molecule of ammonia (NH3) has
"Carbon prefers to share its valence electrons with other atoms of carbon or with atoms of other elements rather than gaining or losing the valence electrons in order to attain noble gas configuration." Give reasons to justify this statement.
The number of single and double bonds present in a molecule of benzene (C6H6) respectively, are ______.
In covalent compounds, the bond is formed due to ______ of electrons.
