Question

What is the atomic number of the two isotopes of nitrogen?

Answer 1

in an isotope of an element it's atomic number are same but have different mass number soo in an isotope of nitrogen it's atomic number will be 7 as it's atomic no is 7

Answer 2

$\huge\bf\boxed{Z=7}$

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Isotopes are form of element which have same atomic number(Z) but different mass number because they have different number of Neutrons(A).

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The 2 Isotopes of Nitrogen are Nitrogen-14 $N^{14}__7$ and Nitrogen-15 $N^{15}__7$.

Atomic Number = Number of Protons

Since, Atomic numbers of isotopes are same, Atomic number = 7 for both the isotopes.

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However, the  Mass number of 2 differ.

• Mass Number = Number of (Protons + Electrons)

• The Mass number of Nitrogen-14 is 14

        and Mass Number of Nitrogen-15 is 15.

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