Chemical Bonding-Science 9

Which of the following properties of atoms is more suitable reference for the kind of bond that will take place between/among them?

• atomic size

• electronegativity

• atomic number

• ionization energy

What kind of particle is produced after ionic bonding?

• molecule

• atom

• electron

• ion

How does ionic bonding take place?

• Two non-metallic elements of different kinds form strong forces of attraction.

• Two non-metallic element of the same kind form strong forces of attraction.

• A non-metallic element like fluorine is attracted to a metallic element like sodium.

• A metallic element like sodium transfers an electron to a non-metallic element like fluorine.

What kind of chemical bond will form between two oxygen atoms?

• ionic bond

• metallic bond

• polar covalent bond

• non-polar covalent bond

When does covalent bonding take place?

• It takes place when atoms share electrons with one another.

• It takes place when attraction between atoms is strong.

• It takes place when atoms collide with one another.

• It takes place when atoms attain stability.

Nitrogen (N) belongs to 5A family and it is diatomic. How many nonpolar covalent bonds will be there in N2 molecule?

• 1

• 2

• 3

• 4

Which among the following shows that an atom is stable?

• having 2 valence electrons

• having 4 valence electrons

• having 6 valence electrons

• having 8 valence electrons

Element X belongs to Group 1. Which of the following best describes this element?

• high electronegativity

• high ionization energy

• low electronegativity

• a non-metallic element

What will most likely to happen to a non-metallic atom after ionic bonding?

I. It forms anion. III. It becomes unstable.

II. It forms cation. IV. It becomes stable.

• I and IV

• II and III

• I and II

• III and IV

What kind of bond will result when two identical non-metallic atoms combine?

• ionic bond

• metallic bond

• polar covalent bond

• non-polar covalent bond