Chapter 4

NCERT
Class 9
Science
Solutions
2. With the help of given find out the mass number of oxygen and sulphur atom.
Promo GIF

Question:

With the help of given find out the mass number of oxygen and sulphur atom.

Answer:

Mass number = No. of proton + No. of neutron

No. of protons in oxygen atom = 8

No. of neutrons in oxygen atom = 8

Mass number of oxygen atom = 8 + 8 = 16

No. of proton in sulphur atom = 16

No. of neutrons in sulphur atom = 16

Mass number of sulphur atom = 32

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