Question

6. The atomic number of an element is IT and its mass number is 37. The number of Protons, electrons and neutrons present in the neutral atom 28m o are : 30, 17, 8 C) 37,20,17, 17, 2017 a)11, 31,20 b)​

Answer 1

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Answer 2

Explanation:

(A) 20

Given - Atomic number of element = 17

                                Mass number of element = 37 

                                Number of electrons = 17

As we know, number of protons is equal to number of electrons.

so,                  number of protons = 17

now,  Mass number = number of protons + number of neutrons

         37 = 17 + number of neutrons

          number of neutrons = 37 - 17

           number of neutrons = 20

So, the number of neutrons in the nucleus = 20.