Advertisements
Advertisements
प्रश्न
An element L consists of molecules.
- Which type of bond is present in the particles that make up L?
- When L is heated with iron metal, it forms a compound FeL. What chemical term would you use to describe change undergone by L?
Advertisements
उत्तर
- Covalent bonding is present in L as the bond is formed between the same atoms.
- On heating, Fe undergoes oxidation and loses two electrons as follows:
\[\ce{Fe - 2^{e^-} -> Fe^{2+}}\]
L takes up two electrons and undergoes reduction.
APPEARS IN
संबंधित प्रश्न
Two atoms of the same element combine to form a molecule. The bond between them is known as ______ bond.
State any two uses of graphite.
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.
Draw an electron dot diagram for the formation of the following. State the type of bonding present in them.
Hydroxyl ion
Distinguish between ionic and covalent compounds under the following properties:
(i) Strength of forces between constituent elements
(ii) Solubility of compounds in water
(iii) Electrical conduction in substances
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?
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
| \[\begin{array}{cc}\phantom{......}\ce{H}\phantom{...}\ce{H}\phantom{...}\ce{H}\phantom{..}\\ \phantom{.....}|\phantom{....}|\phantom{....}|\\ \ce{H - C - C = C}\\\phantom{.....}|\phantom{.........}|\\ \phantom{.....}\ce{H}\phantom{........}\ce{H}\end{array}\] |
Acetic acid was added to a solid X kept in a test tube. A colourless, odourless gas Y was evolved. The gas was passed through lime water, which turned milky. It was concluded that ______.
Which of the following is the formula of Butanoic acid?
The electron dot structure of chlorine molecule is:
