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is it possibe for the atom of an element to have one electron one proton and no neutron?if so name the element

Yes, hydrogen is the element which is having only 1 proton and 1 electron no neutron. Because it has only one proton, so there is no repulsive forces in the nucleus, so it is stable.

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Hydrogen

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Hydrogen..

Atomic number = 1 = number of protons = A

Atomic mass = 1 = Z

Number of neutrons = Z - A 

                                     = 1 - 1 

                                    = 0

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Yes, Hydrogen atom has only one proton and one electron.

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It is Hydrogen

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It is hydrogen (protium)

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