Question

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an element has atomic number 19 and mass number 39 how many electron and protons are present in the unipositive Ion of this element​

Answer 1

Explanation:

Protons = 19

Electrons = 18

Neutrons = 20

Answer 2

Answer:hi Explanation:Your answer

is:

Proton:19

Electron:18

Neutron:20

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