Question

with the help of table 4.1 find out the out the mass number of oxygen and sulphur atom​

Answer 1

Explanation:

For Oxygen:

Number of protons = 8 

Number of electrons = 8

Mass number = Number of Protons + Number of neutrons

                      = 8 + 8

                      = 16

Hence mass number for Oxygen is 16.

For Sulphur:

Number of protons = 16

Number of electrons = 16

Mass number = Number of Protons + Number of neutrons

                       = 16 + 16

                       = 32

Answer 2

( i )

Mass number of Oxygen

= No. of protons + No. of neutrons

= 8 + 8

= 16

( ii )

Mass number of Sulphur

= No. of protons + No. of neutrons

= 16 + 16

= 32

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