How many neutrons are present in an element with mass number 35,atomic number 17 ?

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Solution

An element with mass number(A)-35,atomic number is (Z)-17 Chlorine(Cl)
It is represented as ${Cl}_{17}^{35}$
Number of neutrons (n) = A - Z
n=35 - 17
n =18 neutrons.

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An atom has mass number A and atomic number Z.

How many neutrons are present in its nucleus?

Chlorine is an element of atomic number 17. It is a mixture of two isotopes having mass number of 35 and 37.

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^{35} C l_{17}

z = 17

(A) = 35

23

11

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