Complete the following table. | Chemistry class 9 ncert solution


Q.19:- Complete the following table.

Atomic number

Mass number

Number of neutrons

Number of protons

Number of electrons

Name of the atomic species

9

10

16

32

Sulphur

23

12

2

1

1

0

1

0

 

Answer:-

First Line : Mass number = Atomic number (9) + No. of neutrons (10) = 19



No. of protons = Atomic number = 9
No. of electrons = Atomic number =9
Name of the species = Fluorine (F)
Second Line : No. of neutrons = Mass number (32) – Atomic number (16) = 16
No. of protons = Atomic number =16
No. of electrons = Atomic number =16
Third Line : Atomic number = No. of protons = 12
No. of neutrons = Mass number (24) – Atomic number (12) =12
No. of electrons = Atomic number =12
Name of the species = Magnesium (Mg)
Fourth Line : Atomic number = No. of protons = 1
No. of neutrons = Mass number (2) – Atomic number (1) = 1
No. of electrons = Atomic number =1
Name of the species = Deuterium (D).
Fifth Line : Atomic number = No. of protons = 1
No. of electrons = Atomic number = 1
Name of the species = Protium or Hydrogen (H)
The complete table can also be represented as :

Atomic number

Mass number

Number of neutrons

Number of protons

Number of electrons

Name of the atomic species

9

19

10

9

9

Fluorine

16

32

16

16

16

Sulphur

12

24

12

12

12

Magnesium

1

2

1

1

1

Deuterium

1

1

0

1

0

Hydrogen



TutionTeacher: Know free answers of your school textbook. You can find the correct answer of your School textbook question here. This education portal will help in getting the NCERT solutions for your exams. Here you will get the complete question answer and solution of your textbook for your better education. Your can also ask for online study and assignment help from menu. Online test series will also help you how to learn and achive better marks in your school or collage.