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The Fundamental Unit of Life
Question
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Composition of the nuclei of two atomic species A and B is given as under. Give the mass numbers of A and B. What is the relation between the two species and which element or elements do they represent

A B
Protons =6 Protons=6
Neutrons=6 Neutrons =8

 

Answer

Mass number of A = 6 + 6 = 12
Atomic number of A = 6Composition of the nuclei of two atomic species A and B is given as under. Give the mass numbers of A and B. The relation between the two species and element represented as: 
Mass number of B = 6 + 8 = 14
Atomic number of B = 6
Therefore, A and B have the same atomic number but different mass number.
So, Atoms of the same element i.e. carbon and are isotopes to each other.

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Composition of the nuclei of two atomic species X and Y are given as under


                              X        Y
Protons  =                6        6
Neutrons=                6        6

Give the mass numbers of X and Y. What is the relation between the two species?

For the following statements, write T for True and F for False.

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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

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-

-

-

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-

12

-

-

-

2

-

1

-

-

-

1

-

1

0

-