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Questions
Give two example in following case:
Solid covalent compounds
Give an example in the following case:
Solid covalent compound
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Solution 1
Phosphoruspentachloride and diamond
Solution 2
Iodine and PCl5
RELATED QUESTIONS
What is graphite?
The atomic numbers of four elements P, Q, R and S are 6, 10, 12 and 17 respectively. Which two elements can combine to form a covalent compound?
(a) P and R
(b) Q and S
(c) P and S
(d) R and S
The number of isomers formed by the hydrocarbon with molecular formula C5H12 is:
(a) 2
(b) 5
(c) 3
(d) 4
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
Give examples for the following:
Two solid covalent compounds.
The following table shows the electronic configuration of the elements W, X, Y, Z:
|
Element |
W |
X |
Y |
Z |
|
Electronic |
2,8,1 |
2,8,7 |
2,5 |
1 |
Answer the following questions based on the table above:
What type of bond is formed between Y and Z.
Name two carbon compounds used in day-to-day life.
Complete the following activity.
Write the names of the hydrocarbons for the following structural formula.
(isobutylene, cyclohexane, propene, cyclohexene, cyclopentane, benzene, propyne, isobutane, propane)
| \[\begin{array}{cc} \phantom{.........}\ce{H}\\ \phantom{.........}|\\ \ce{H - C ≡ C - C - H}\\ \phantom{.........}|\\ \phantom{.........}\ce{H} \end{array}\] |
Which of the following is the purest form of carbon?
