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प्रश्न
Write the number of covalent bonds in the molecule of butane, C4H10.
उत्तर
There are thirteen covalent bonds—ten C-H and three C-C bonds—present in a molecule of butane.
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संबंधित प्रश्न
Ethane, with the molecular formula C2H6 has ______.
State the type of bonding in the following molecule.
Water
Name the element whose one of the allotropic forms is buckminsterfullerene.
What type of bonds are present in CO2 molecule? Draw their electron-dot structures.
What type of chemical bonds are formed by carbon? Why?
Explain why, ionic compounds conduct electricity in solution whereas covalent compounds do not conduct electricity.
Give the formula of the compound that would be formed by the combination of the following pair of elements:
K and H
A solid element X has four electrons in the outermost shell of its atom. An allotrope Y of this element is used as a dry lubricant in machinery and also in making pencil leads.
(a) What is element X?
(b) Name the allotrope Y.
(c) State whether allotrope Y is a good conductor or non-conductor of electricity.
(d) Name one use of allotrope Y (other than lubrication and pencil leads)
(e) Name two other allotropes of element X.
The electronic configurations of two elements A and B are given below:
| A | 2, 6 |
| B | 2, 8, 1 |
(a) What type of chemical bond is formed between the two atoms of A?
(b) What type of chemical bond will be formed between the atoms of A and B?
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?
Match the pairs.
| Group 'A' | Group 'B' |
| a. C2H6 | 1. Unsaturated hydrocarbon |
| b. C2H2 | 2. Molecular formula of an alcohol |
| c. CH4O | 3. Saturated hydrocarbon |
| d. C3H6 | 4. Triple bond |
Choose the correct answer from the options given below
Condition favorable for formation of a covalent bond is
Compound X consists of molecules.
Choose the letter corresponding to the correct answer from the options A, B, C and D given below:
The type of bonding in X will be ______.
Explain the following:
Water is a polar covalent molecule.
Element A has 2 electrons in its M shell. Element B has atomic number 7.
If B is a diatomic gas, write the equation for the direct combination of A and B to form a compound.
Name the anion present in the following compound:
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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 ______.
Cation is formed when ______.
Although metals form basic oxides, which of the following metals form an amphoteric oxide?
Explain dipole (polar) molecule by taking hydrogen chloride as an example.
