With the help of Table 4.1, find out the mass number of oxygen and sulphur atom

 

Answer

(i) Oxygen atom

 

Number of protons = 8

Number of neutrons = 8

 

Mass number = Number of protons + Number of neutrons 

                        = 8 + 8

                        = 16

Therefore, the mass number of an oxygen atom = 16



(ii) Sulphur atom

 

Number of protons = 16

Number of neutrons = 16

 

Mass number = Number of protons + Number of neutrons 

                        = 16 + 16

                        = 32

Therefore, the mass number of a sulphur atom = 32

  1. Class 9
  2. Chapter 4 Class 9 - Structure of Atom (Term 2)

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CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 11 years and a teacher from the past 11 years. He teaches Science, Accounts and English at Teachoo