Atomic Bonding Revision MCQ Questions

1.    A colourless crystalline solid melts below 150oC and dissolves in water to give a solution that does not conduct electricity. The solid may be

A    sodium chloride, NaCl

B    silicon dioxide, SiO2

C    copper, Cu

D    glucose, C6H12O6


2.    X, Y and Z are three elements with consecutive proton numbers. X has
the lowest proton number and Y is a noble gas. How is a stable compound formed between X and Z ?

A    Each atom of X shares a pair of electrons with an atom of Z.

B    Each atom of X receives an electron from an atom of Z to form X+Z.

C    Each atom of X gives an electron to an atom of Z to form XZ+ .

D    Each atom of X receives an electron from an atom of Z to form XZ+ .


3.    In which of the following is there no covalent bond?

A    diamond

B    aluminium fluoride

C    sodium sulfate

D    sulfur dioxide


4.    The elements X and Y form the compound X2Y. What is the correct electronic arrangement of the atoms of X and Y? Atomic bonding Q4.PNG


5.    Which substance in the table could be hydrogen chloride? Atomic bonding Q5.PNG


6.    When solid iodine is heated, it changes into a purple gas without passing through the liquid state. In this process

A    covalent bonds between iodine atoms are broken.

B    covalent bonds between iodine molecules are broken.

C    ionic forces between iodine atoms are overcome.

D    attractive forces between iodine molecules are overcome.


7.     The elements T, X and Y have consecutive, increasing atomic numbers. If element T is noble gas, what will be the symbol for the ion of element Y in its compounds?

A    Y3+

B    Y2-

C    Y+

D    Y2+


8.    A stable molecule containing atoms of the elements X, Y and Z has the following structure. Atomic bonding Q8.PNG


9.    Which structural feature of graphite best accounts for its use as a lubricant?

A    delocalized electrons

B    hexagonal arrangement of carbon atoms

C    strong covalent bonds within layers

D    weak Van der Waals’ forces between layers


10.    A substance contains the ions X4+ and Y2-. What is the simplest formula of the compound containing the ion X4+ and Y2-?

A X2Y4

B X4Y2

C XY2

D X2Y


11.    The equation below shows the reaction between element X and dilute
hydrochloric acid.
X (s) + 2HCl (aq) → XCl2(aq) + H2 (g)

Which types of bonding are present in element X and compound XCl2? Atomic bonding Q11.PNG


12.    Elements X and Y are both non-metallic elements in the Periodic Table. Element X combines with carbon to give the structural formula of X=C=X. Element Y combines with hydrogen to give the structural formula of H-Y.

What is the most likely structural formula of the covalent compound X2Y2?

A    X-Y-Y-X

B    X=Y-Y=X

C    Y-X-X-Y

D    Y-X-Y-X




Answer:

1.    D

2.    D

3.    B

4.    D

5.    A

6.    D

7.    D

8.    C

9.    D

Advertisements

Author: matharena

Math Educator

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s