The answer is A i did this before hope this helps
The subatomic particles located within the nucleus of the atom are Protons, Neutrons, and Electrons.
protons are positively charged
neutrons are neutrally charge
electrons are negatively charged
hope this helps
Pt195 having 78 atomic number is the daughter nucleus produced when Au195 undergoes electron capture.
An unstable isotopes can undergoes radioactive decay to form a more stable isotopes . Initial isotopes is called parent nuclide and the resultant isotopes from radioactive decay is called the daughter nuclide There are several radioactive decay like alpha decay , beta decay , gamma decay , electron capture etc .
In electron capture , the atom have only one less which is daughter isotopes than electron than atomic number of parent isotopes.
learn more about isotopes,
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