Chemistry 9th Chap 5 : Test Yourself

Chemistry Chapter 5 : Test Yourself

1 / 9

Which of the following atoms will form an ion of charge - 2?

A) 12 24

B) 14 28

C) 8 16

D) 10 20

2 / 9

Which of the following atoms will not form cation or anion.

A) (Atomic No. 19)

B) (Atomic No. 17)

C) (Atomic No. 18)

D) (Atomic No. 16)

3 / 9

Which of the following atoms will form cation?

A) 15

B) 20

C) 18

D) 17

4 / 9

Which of the following atoms obey duplet rule?

A) O

B) N

C) H

D) F

5 / 9

Silicon belongs to Group IVA. It has ________ electrons in the valence shell.

A) 3

B) 6

C) 2

D) 4

6 / 9

Phosphorus belongs to third period of Group VA. How many electrons it needs to complete its valence shell?

A) 5

B) 3

C) 2

D) 4

7 / 9

In the formation of AlF₃, aluminum atom loses ______ electrons.

A) 1

B) 2

C) 4

D) 3

8 / 9

Which of the following is not true about the formation of Na₂S?

A) Each sodium atom loses one electron

B) Each sulphur atom gains one electron

C) Sodium forms cation

D) Sulphur forms anion

9 / 9

Identify the covalent compound.

A) KF

B) MgO

C) NaCl

D) H₂O

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