Question

An element has a mass number=37 and it contains 17 protons.

a) Write the symbolic representation of the element.

b) Find the number of proton, neutron and electron in the element.

c) Write electronic configuration of element.

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Answer 1

Answer:

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.